Crystal Reports 11 - How do I fix Datasource for subreport?

Hi. We are still using CR11. When I am in the IDE and run the Print Preview, I see a message that the table and database no longer exists and do I want to remove it from the report. It is true, we often delete unused test databases. Somehow, this subreport has accidentally been orphaned.

This report has about 25 subreports. Is there a way to look at this report to determine which one is using a connection to the deleted database?