Hi,
When attributes / associations are removed / added to entities, it might lead to error messages like “The selected association xxx no longer exist”. In order to fix those errors, we have to manually edit every single access rule, wait for an information message “The object members have been updated”, and then close the dialog box.
My idea is to just apply the changes silently. Another option would be to add the possibility to fix all those errors from the “Errors” panel through a “Fix all” feature, as it exists for other errors.