Export modified data definitions for reports?

We are piloting 8.03.404b. I have created modified reports that make
use of 404's ability to bring in extra tables that we could not do in

Is there a way to export my modified report data definitions so I can
import when the db gets overwriiten by next conversion of *live* data?

*Or* if someone knows off the top of their head what tables I could
save to merge into the newly converted db that would restore my mods....