Plugin updater in TYPO3 12 breaks flexform extensions

[hannesbochmann]

Bug Report

Current Behavior If the old plugins are migrated to the new ones through the update wizard the flexform is cleaned up and everything removed that doesn't exists in the current flexform. Problem is that extensions of the flexform through the event flexform-modify-data-structure won't be considered.

Expected behavior/output The flexform extensions should be kept which should be hard to find out or the flexform should not be cleaned up at all or at least the cleanup can be disabled.

Environment

• TYPO3 version(s):12.4
• news version: 11.2.0
• Is your TYPO3 installation set up with Composer (Composer Mode): yes
• OS: Linux

Possible Solution I would make the cleanup optional.

[georgringer]

can you test latest main version? thanks

[hannesbochmann]

Ahh, I see the differences to version 11.2.0. Great work, thanks.