diff --git a/odoo/addons/base/models/ir_fields.py b/odoo/addons/base/models/ir_fields.py
index 619d66ab4e1..0ed56061caa 100644
--- a/odoo/addons/base/models/ir_fields.py
+++ b/odoo/addons/base/models/ir_fields.py
@@ -640,37 +640,3 @@ class IrFieldsConverter(models.AbstractModel):
                 commands.append(Command.create(writable))
 
         return commands, warnings
-
-class O2MIdMapper(models.AbstractModel):
-    """
-    Updates the base class to support setting xids directly in create by
-    providing an "id" key (otherwise stripped by create) during an import
-    (which should strip 'id' from the input data anyway)
-    """
-    _inherit = 'base'
-
-    # sadly _load_records_create is only called for the toplevel record so we
-    # can't hook into that
-    @api.model_create_multi
-    @api.returns('self', lambda value: value.id)
-    def create(self, vals_list):
-        recs = super().create(vals_list)
-
-        import_module = self.env.context.get('_import_current_module')
-        if not import_module: # not an import -> bail
-            return recs
-        noupdate = self.env.context.get('noupdate', False)
-
-        xids = (v.get('id') for v in vals_list)
-        self.env['ir.model.data']._update_xmlids([
-            {
-                'xml_id': xid if '.' in xid else ('%s.%s' % (import_module, xid)),
-                'record': rec,
-                # note: this is not used when updating o2ms above...
-                'noupdate': noupdate,
-            }
-            for rec, xid in zip(recs, xids)
-            if xid and isinstance(xid, str)
-        ])
-
-        return recs
diff --git a/odoo/models.py b/odoo/models.py
index 62f9a206d3e..006e72b89bb 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -3856,13 +3856,13 @@ class BaseModel(metaclass=MetaModel):
         self = self.browse()
         self.check_access_rights('create')
 
-        vals_list = self._prepare_create_values(vals_list)
+        new_vals_list = self._prepare_create_values(vals_list)
 
         # classify fields for each record
         data_list = []
         determine_inverses = defaultdict(set)       # {inverse: fields}
 
-        for vals in vals_list:
+        for vals in new_vals_list:
             precomputed = vals.pop('__precomputed__', ())
 
             # distribute fields into sets for various purposes
@@ -3957,6 +3957,28 @@ class BaseModel(metaclass=MetaModel):
 
         if self._check_company_auto:
             records._check_company()
+
+        import_module = self.env.context.get('_import_current_module')
+        if not import_module: # not an import -> bail
+            return records
+
+        # It is to support setting xids directly in create by
+        # providing an "id" key (otherwise stripped by create) during an import
+        # (which should strip 'id' from the input data anyway)
+        noupdate = self.env.context.get('noupdate', False)
+
+        xids = (v.get('id') for v in vals_list)
+        self.env['ir.model.data']._update_xmlids([
+            {
+                'xml_id': xid if '.' in xid else ('%s.%s' % (import_module, xid)),
+                'record': rec,
+                # note: this is not used when updating o2ms above...
+                'noupdate': noupdate,
+            }
+            for rec, xid in zip(records, xids)
+            if xid and isinstance(xid, str)
+        ])
+
         return records
 
     def _prepare_create_values(self, vals_list):