I used quick add file to add a file to a project in Trados Studio 2022, and now I seem to have lost the work I did on previous files. Words is displaying as n/a and the 'File Status' &  'Progress' was 100% translated, now it doesn't show anything.  Then when I tried to open a file, the error message said 'Object reference not set to an instance of an object'.

What has happened?  And how do I get the work back I had originally.

I started the project when I had Trados Studio 2021, and then updated to 2022 mid-project, would this be a factor?