Found in Version 10.0.21.0
Resolved in Version 10.0.25.0

Bug: When changes are made to a Sub Report that is inside a Sub Band in Finished Reports Designer and the user saves their Finished Report, the changes will not be saved. 

Steps to reproduce:

1. Open / Create a View
2. Run the View
3. Open FR Designer
4. Insert a sub band
5. Add sub report to sub band
6. Add fields to the sub report
7. Save and Close FR Designer
8. Open FR Designer
9. Preview Sub Report

Expected Result: Changes made in the Finished Report should be saved.

Actual Result: Changes made to a Sub Report in the Sub Band will not be saved.