Watched Status not imported



I have recently updated from Kodi 20 to 21 on my Raspberry Pi 5 running Ubuntu.
Since the new version was not officially available I had to deinstall the old version and reinstall the new one, causing me to import my files again. Before uninstalling, I exported my library to seperate files, which worked good. However after reinstalling, not all watched status are imported correctly. A couple of hundred movies are displayed as unwatched. Looking in the .nfo that were created next to the movie file in the movie folder, it containes the
    <playcount>1</playcount>
    <lastplayed>2024-05-19</lastplayed>
but inside of Kodi, it says unwatched. Weirdly, about 40 movies the status is read correctly.

Is there anything I can do to get my watched status back on all the movies I’ve already seen?