diff --git a/.gitignore b/.gitignore
index 17d85cdc..95a62a5b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -51,6 +51,7 @@ logs/
 .pytest_cache/
 .coverage
 htmlcov/
+backend/app_data/
 
 # Node (para frontend)
 node_modules/
diff --git a/frontend/src/lib/components/dashboard/clients_and_providers/data-table.svelte b/frontend/src/lib/components/dashboard/clients_and_providers/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/clients_and_providers/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/clients_and_providers/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/goods/parts/data-table.svelte b/frontend/src/lib/components/dashboard/goods/parts/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/goods/parts/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/goods/parts/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/invoices/data-table.svelte b/frontend/src/lib/components/dashboard/invoices/data-table.svelte
index 10c61ad2..d549b5a2 100644
--- a/frontend/src/lib/components/dashboard/invoices/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/invoices/data-table.svelte
@@ -77,7 +77,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/invoices/edit/items/items-tab-form.svelte b/frontend/src/lib/components/dashboard/invoices/edit/items/items-tab-form.svelte
index d354044a..de9dd55e 100644
--- a/frontend/src/lib/components/dashboard/invoices/edit/items/items-tab-form.svelte
+++ b/frontend/src/lib/components/dashboard/invoices/edit/items/items-tab-form.svelte
@@ -376,7 +376,7 @@
 			class="max-h-[500px] overflow-auto border rounded-md"
 		>
 			<Table.Root>
-				<Table.Header class="sticky top-0 bg-background z-10">
+				<Table.Header class="bg-background">
 					<Table.Row>					
 						<Table.Head>Línea</Table.Head>		
 						<Table.Head>P/S</Table.Head>	
diff --git a/frontend/src/lib/components/dashboard/pedimentos/data-table.svelte b/frontend/src/lib/components/dashboard/pedimentos/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/pedimentos/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/pedimentos/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/pedimentos/edit/digitization-tab-form.svelte b/frontend/src/lib/components/dashboard/pedimentos/edit/digitization-tab-form.svelte
index 52646ac0..2194b826 100644
--- a/frontend/src/lib/components/dashboard/pedimentos/edit/digitization-tab-form.svelte
+++ b/frontend/src/lib/components/dashboard/pedimentos/edit/digitization-tab-form.svelte
@@ -591,7 +591,7 @@
 				{:else}
 					<div class="overflow-y-auto h-full">
 						<Table>
-							<TableHeader class="sticky top-0 bg-background z-10 border-b">
+							<TableHeader class="bg-background border-b">
 								<TableRow>
 									<TableHead class="w-[100px]">Código</TableHead>
 									<TableHead>Descripción</TableHead>
diff --git a/frontend/src/lib/components/dashboard/reference_data/code_pedimento_regimens/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/code_pedimento_regimens/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/code_pedimento_regimens/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/code_pedimento_regimens/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/containers/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/containers/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/containers/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/containers/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/countries/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/countries/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/countries/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/countries/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/currency_types/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/currency_types/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/currency_types/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/currency_types/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/customs_sections/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/customs_sections/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/customs_sections/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/customs_sections/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/customs_warehouses/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/customs_warehouses/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/customs_warehouses/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/customs_warehouses/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/incoterms/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/incoterms/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/incoterms/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/incoterms/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/invoice_types/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/invoice_types/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/invoice_types/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/invoice_types/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/material_types/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/material_types/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/material_types/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/material_types/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/payment_methods/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/payment_methods/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/payment_methods/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/payment_methods/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/pedimento_codes/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/pedimento_codes/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/pedimento_codes/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/pedimento_codes/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/pedimento_regimens/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/pedimento_regimens/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/pedimento_regimens/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/pedimento_regimens/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/sectors/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/sectors/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/sectors/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/sectors/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/states/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/states/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/states/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/states/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/transport_modes/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/transport_modes/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/transport_modes/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/transport_modes/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/transport_types/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/transport_types/data-table.svelte
index ef98de23..4c448e3d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/transport_types/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/transport_types/data-table.svelte
@@ -62,7 +62,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/reference_data/valuation_methods/data-table.svelte b/frontend/src/lib/components/dashboard/reference_data/valuation_methods/data-table.svelte
index 5b6be70f..4c84570d 100644
--- a/frontend/src/lib/components/dashboard/reference_data/valuation_methods/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/reference_data/valuation_methods/data-table.svelte
@@ -63,7 +63,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/dashboard/seal/data-table.svelte b/frontend/src/lib/components/dashboard/seal/data-table.svelte
index 7f02c1cc..2438370f 100644
--- a/frontend/src/lib/components/dashboard/seal/data-table.svelte
+++ b/frontend/src/lib/components/dashboard/seal/data-table.svelte
@@ -63,7 +63,7 @@
 <div class="w-full">
 	<div class="rounded-md border max-h-[600px] overflow-y-auto" bind:this={scrollContainer}>
 		<Table.Root>
-			<Table.Header class="sticky top-0 bg-background z-10">
+			<Table.Header class="bg-background">
 				{#each table.getHeaderGroups() as headerGroup (headerGroup.id)}
 					<Table.Row>
 						{#each headerGroup.headers as header (header.id)}
diff --git a/frontend/src/lib/components/ui/table/table-head.svelte b/frontend/src/lib/components/ui/table/table-head.svelte
index e9dd2378..c7c5e7ec 100644
--- a/frontend/src/lib/components/ui/table/table-head.svelte
+++ b/frontend/src/lib/components/ui/table/table-head.svelte
@@ -14,7 +14,7 @@
 	bind:this={ref}
 	data-slot="table-head"
 	class={cn(
-		"text-foreground h-10 whitespace-nowrap bg-clip-padding px-2 text-left align-middle font-medium [&:has([role=checkbox])]:pr-0",
+		"text-foreground h-10 whitespace-nowrap px-2 text-left align-middle font-medium [&:has([role=checkbox])]:pr-0 bg-background",
 		className
 	)}
 	{...restProps}