diff --git a/account_statement_import_sheet_file/i18n/es.po b/account_statement_import_sheet_file/i18n/es.po
index 380e7d3996..0d3df2c4ad 100644
--- a/account_statement_import_sheet_file/i18n/es.po
+++ b/account_statement_import_sheet_file/i18n/es.po
@@ -246,8 +246,8 @@ msgstr "Recuento de líneas omitidas a pie de página"
 
 #. module: account_statement_import_sheet_file
 #: model:ir.model.fields,field_description:account_statement_import_sheet_file.field_account_statement_import_sheet_mapping__header_lines_skip_count
-msgid "Header lines skip count"
-msgstr "Recuento de líneas de cabecera omitidas"
+msgid "Header row number"
+msgstr "Número de fila del encabezado"
 
 #. module: account_statement_import_sheet_file
 #: model:ir.model.fields,field_description:account_statement_import_sheet_file.field_account_statement_import_sheet_mapping__id
@@ -403,8 +403,8 @@ msgstr ""
 
 #. module: account_statement_import_sheet_file
 #: model:ir.model.fields,help:account_statement_import_sheet_file.field_account_statement_import_sheet_mapping__header_lines_skip_count
-msgid "Set the Header lines number."
-msgstr "Establezca el número de líneas de Cabecera."
+msgid "Row number where the column headers are located (first row is 0)."
+msgstr "Número de fila donde se encuentran los encabezados de columna (la primera fila es 0)."
 
 #. module: account_statement_import_sheet_file
 #: model:ir.model.fields,field_description:account_statement_import_sheet_file.field_account_statement_import__sheet_mapping_id
diff --git a/account_statement_import_sheet_file/models/account_statement_import_sheet_mapping.py b/account_statement_import_sheet_file/models/account_statement_import_sheet_mapping.py
index 8ca187f525..9da4785538 100644
--- a/account_statement_import_sheet_file/models/account_statement_import_sheet_mapping.py
+++ b/account_statement_import_sheet_file/models/account_statement_import_sheet_mapping.py
@@ -77,9 +77,6 @@ class AccountStatementImportSheetMapping(models.Model):
             "transaction from"
         ),
     )
-    amount_column = fields.Char(
-        help="Amount of transaction in journal's currency",
-    )
     amount_debit_column = fields.Char(
         string="Debit amount column",
         help="Debit amount of transaction in journal's currency",
@@ -122,7 +119,7 @@ class AccountStatementImportSheetMapping(models.Model):
         required=True,
         default="simple_value",
         help=(
-            "Simple value: use igned amount in amount column\n"
+            "Simple value: use signed amount in amount column\n"
             "Absolute Value: use a same column for debit and credit\n"
             "(absolute value + indicate sign)\n"
             "Distinct Credit/debit Column: use a distinct column for debit and credit"
@@ -173,8 +170,8 @@ class AccountStatementImportSheetMapping(models.Model):
         default="0",
     )
     header_lines_skip_count = fields.Integer(
-        string="Header lines skip count",
-        help="Set the Header lines number.",
+        string="Header row number",
+        help="Row number where the column headers are located (first row is 0).",
         default="0",
     )
     skip_empty_lines = fields.Boolean(
@@ -232,6 +229,13 @@ def onchange_decimal_separator(self):
         elif "comma" == self.float_thousands_sep == self.float_decimal_sep:
             self.float_thousands_sep = "dot"
 
+    @api.onchange("amount_type")
+    def _clear_amount_columns(self):
+        self.amount_column = False
+        self.debit_credit_column = False
+        self.amount_debit_column = False
+        self.amount_credit_column = False
+
     @api.constrains("offset_column")
     def _check_columns(self):
         for mapping in self:
diff --git a/account_statement_import_sheet_file/wizard/account_statement_import_sheet_parser.py b/account_statement_import_sheet_file/wizard/account_statement_import_sheet_parser.py
index c6c8c36d32..5bf149ddaa 100644
--- a/account_statement_import_sheet_file/wizard/account_statement_import_sheet_parser.py
+++ b/account_statement_import_sheet_file/wizard/account_statement_import_sheet_parser.py
@@ -144,7 +144,22 @@ def _get_column_indexes(self, header, column_name, mapping):
                     column_indexes.append(column_index)
             else:
                 if column_name_or_index:
-                    column_indexes.append(header.index(column_name_or_index))
+                    try:
+                        column_indexes.append(header.index(column_name_or_index))
+                    except ValueError:
+                        # Fallback: case-insensitive match
+                        column_index = next(
+                            (
+                                i
+                                for i, h in enumerate(header)
+                                if str(h).lower() == column_name_or_index.lower()
+                            ),
+                            None,
+                        )
+                        if column_index is not None:
+                            column_indexes.append(column_index)
+                        else:
+                            raise
         return column_indexes
 
     def _get_column_names(self):
@@ -403,6 +418,8 @@ def _parse_decimal(self, value, mapping):
             return float(value)
         elif isinstance(value, float):
             return value
+        if not isinstance(value, str):
+            value = str(value)
         thousands, decimal = mapping._get_float_separators()
         # Remove all characters except digits, thousands separator,
         # decimal separator, and signs