No worries man, but yes that's correct.My boot image I extracted is from the current a_14 version, which I also previously installed.
I am using Magisk 25.1 and have patched the boot image from the installed version.
So it should work again if I manage to remove the Magisk module again and then boot the a_14 boot image.
Can I then boot the patched boot image again and get my root rights back?
And thank you for your fast help!