Hello Matt,
First of all, welcome to the SoapUI Pro Community!
Second, i've tried reproducing the exact steps you are doing as follows:
Select test case
Press F2 (Rename)
Write new name
Select OK (Observe the change in the folder to the new name)
File -> Save all projects
Select Project
Press F5 (Reload Composite Project)
Select the folder
Press OK
Observe the folder
Only the new name of the TestCase lingers for me. I tested using Windows 7 64-bit.
Can you try to reproduce the issue and include some images showing what's going on?
Also, what OS are you running?
Best regards,
Mikael
SmartBear Support