diff --git a/.oca/oca-port/blacklist/base_view_inheritance_extension.json b/.oca/oca-port/blacklist/base_view_inheritance_extension.json
new file mode 100644
index 000000000..1681c688f
--- /dev/null
+++ b/.oca/oca-port/blacklist/base_view_inheritance_extension.json
@@ -0,0 +1,7 @@
+{
+  "pull_requests": {
+    "OCA/server-tools#1937": "requirements.txt update (not relevant)",
+    "OCA/server-tools#2216": "requirements.txt update (not relevant)",
+    "OCA/server-tools#2457": "(auto) Nothing to port from PR #2457"
+  }
+}
diff --git a/base_view_inheritance_extension/models/ir_ui_view.py b/base_view_inheritance_extension/models/ir_ui_view.py
index bd43e426e..09cf6e2ca 100644
--- a/base_view_inheritance_extension/models/ir_ui_view.py
+++ b/base_view_inheritance_extension/models/ir_ui_view.py
@@ -3,11 +3,16 @@
 # Copyright 2021 Camptocamp SA (https://www.camptocamp.com).
 # Copyright 2023 Tecnativa - Carlos Dauden
 # License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl.html).
-
 import ast
+import logging
 import re
 
-import astor
+try:
+    import astor
+except ImportError as err:  # pragma: no cover
+    _logger = logging.getLogger(__name__)
+    _logger.debug(err)
+
 from lxml import etree
 
 from odoo import api, models
@@ -176,6 +181,7 @@ class IrUiView(models.Model):
                 else:
                     new_value = str(expression.AND([old_domain, new_domain]))
                 new_value = self.str2var_domain_text(new_value)
+                old_value = "".join(old_value.splitlines())
             else:
                 # We must ensure that the domain definition has not line breaks because
                 # in update mode the domain cause an invalid syntax error