11987 change cable bulk import to check if same cable

Author: arthanson

netbox/dcim/forms/bulk_import.py

@@ -1192,7 +1192,7 @@ def _clean_side(self, side):
                 termination_object = model.objects.get(device__in=device.virtual_chassis.members.all(), name=name)
             else:
                 termination_object = model.objects.get(device=device, name=name)
-            if termination_object.cable is not None:
+            if termination_object.cable is not None and termination_object.cable != self.instance:
                 raise forms.ValidationError(f"Side {side.upper()}: {device} {termination_object} is already connected")
         except ObjectDoesNotExist:
             raise forms.ValidationError(f"{side.upper()} side termination not found: {device} {name}")