I upgraded last week and tried opening databases today. In one case I was told that the database was an old format and so I okayed updating. That data base is accessible. But the original data base has 2.77 GB of data. I have made several copies and they all have 30MB or less data according to Get Info.
The remaining databases are not opening and I do not get the same offer to update them. I do not sync the databases. I have backups of the databases.
At this point I could use some advice. . .