Relink Problem 10.4

Hi . i am getting Offline files . original and proxies after update to 10.4.
the Files are external on a NAS , worked fine all the time
all files are offlicne
when I try to reconnect a file . I get .. " The original did not have Audio, the new files has Audio " ??? its the sam file as before located in the Final cut Original folder

Anyone know this ? , trash preferences did not help ,, other projects work fine
thasks

I had this issue with a couple of libraries on a local RAID when updating. No clue what the fix is. Fortunately mine were very small productions and easy to rebuild.

after working around a lot , relinking some files, the picture sat getting back , but the soundtrack from the video shows red .. offline -- but the sound is there - i can hear it. very strange

i deleted all the render , thumbnail and peaks data, on some clips the waveform returns and the clip does not show the yellow triangle anymore, but other still show sound offline .. but its the same clip as before !!
anyone know if there is some database file that makes a fore rebuild if deleted or something else i could do ?
it seem to slowly rebuild some waveforms without showing that it does something in the task manager

is a very big project 20 Cams in 4 K a whole concert