Open an old archive

Hi. I’ve got a problem with em client. After installing an update, my local archive is no longer in my mailbox. I’ve found the dat files under C:\Users\Peter\AppData\Roaming\eM Client\Archive
but how can I open this files in my em client?
Import and open can not handle .dat files.
Any suggestions?

Hi Krusty,

what update did you install?
When you check the size of the archive folder, does it seem as the data you’re missing is inside? In Menu > Tools > Settings > Storage check that your database is really in its default location.