Don’t disagree… Bobarella is right. You are having the problems because you deleted the original universes. While the “contents” are the same, the ID associated to the universe is no longer the same.
Originally:
Universe1- ID 10
Universe2- ID 11
You delete them and re-export them the other env.
Now:
Universe1- ID 12
Universe2- ID 13
All objects in a report as based on: Universe ID, Object ID in the Universe.
So… you typically Re-associate the Report to the new universe before deleting the old one… Only you don’t have that option now that the universe is already gone. (In the full client, you can view the data provider and change the Source Universe… it would then update all the Universe IDs to the new ones). Of course… if the old universe Id didn’t exist anymore, BO assumes you shouldn’t have access and doesn’t allow you to make these changes.
Your “BEST” bet is to find an older archived version of the previously exported Development Environment and re-export them there. Since they should contain the old ids, it would let your old reports work again. Migrate all reports before deleting the universe.
digpen 
(BOB member since 2002-08-15)