Fixed bug#9790 - OTRSExternalTicketNumberRecognition Feature addon settings are not migrated.

-If Dynamic Field used for the FAO was not changed it is only in ZZZAAuto.pm and not in ZZZAuto.pm
then ZZZAAuto.pm is not backup and restored, so the script was not able to find the setting
and execute the settings migration, by removing this check the upgrade script will always try to
migrate the settings for this FAO (if any).