Search Lookup Issues After P2T Migration

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Hi,

We recently performed a P2T (Production to Test) migration, and after completing this process, we are encountering an issue with search lookups not working correctly in the system. Specifically, when we search for any person in Person Management, no results are returned. We are facing the same issue in other areas such as Allocate Checklist and Absence Management, where we cannot find any person or relevant records.

Has anyone encountered this issue after performing a P2T migration? If so, could you share any insights into what might be causing this problem? Any help or advice would be greatly appreciated.