the database table cannot be found

I have over a hundred individual rpt files.

Each is based on a Report Definition File (ttx).

All were lasted edited in Crystal Reports 8.5.

I am now moving to Crystal Reports XI R2 SP6.

When i open the report and perform Verify Database, then browse to same ttx file used prior i get an error message "The database table "user_info" cannot be found. Proceed to remove this table from the report?"

The reports run just fine without performing these steps but there are changes i would like to make.

Anybody know how to fix this? I have read everything on the web and tried many things with no success.

Thanks

Pat