I have migrated a site with a big Extbase Extension to TYPO3 v12 and now I'm running into a big problem / inconsistency between the Extbase DataMapper and the PropertyMapper.
Based on this change .CMS/+/75093
the DataMapper now returns uid and localized id as identifier:
$identifier = $row['uid'] . (isset($row['_LOCALIZED_UID']) ? '_' . $row['_LOCALIZED_UID'] : '');
The fluid viewhelper for selectboxes now renders those values as uid_localizeduid (f.e. <option value="1_24">Edilizia / immobiliare</option>)
So far so good but it seems that there is a inconsistency with the PropertyMapper. When I'm editing a record in the frontend now and try to save it via Extbase I get the following problem:
Exception while property mapping at property path "branche": The identity property "17_59" is no UID.
Is there a new setting I'm missing that I should set in my TCA/Repository or is this a bug (somebody else reported it too: ). I suspect it must be a migration error from my side as it seems nobody else ran into this problem?
