Some objects are no longer available in the universe.(Error: WIS 00001)

We are in the process of upgrading BOXI R2 to R3.1 SP3. Setup, configuration of BOXI R3 on new machine is done. And migrated the reports, universes, users, groups and all repository objects with Import Wizard. everything seems good except few Webi reports pointing to wrong universes and getting the below error message.

"Some objects are no longer available in the universe. See your Business Objects administrator. (Error: WIS 00001)"

1) I deleted the particular report from destination and re imported it but still same issue.

2) deleted the file from Input file store and re imported it still same error I'm getting.

Gurus, Please help me..

Thanks,