I updated my language list, reset the is_impoted flag and rerun the script but still get the same error.log file (with the same errors as above).
I used my 3.10 database, migrate to v4 without applying the updateniceurls script, and I do not have anymore the errors in the debug of my ez web site.
But in 3.10, my TransformationGroup was "urlalias_compat". How can I change it now to "urlalias" (as it is recommended by EZ) without running the updateniceurl script ? And what about the inconstancies found by the script ? (shall I just close my eyes ?)