Timeline Edits Missing After BACKUP

All my edits and MEDIA are missing from the timeline after I did a DATABASE backup and/or after doing a EXPORT PROJECT.
How can I get it back in there? Is it lost forever?

I backed up my DATABASE prior to a system upgrade onto a new SSD.
The backup was successful as far as I understand.
I chose restore database and I now see all my projects but the timelines of most of them are missing!
All that is left in there are my Markers, all clips, edits and audio is gone from the timeline. (I still se the media in the MEDIA page)

I'm hoping for a fix!
I also went back to my old system disk and manually did EXPORT PROJECT and then I got the same result. I can import the project and see the files but the Timeline is empty. All that is left in the Timeline are my markers.

Please help!

I tried to reopen the EXPORTED PROJECT and database on both Davinci 12.5 as it was Exported from and the NEW 14.