A project previously under Source Control is now not acting like it is.   I have a project called interview.   This project can be verified to be under Source control by starting up the SourceSafe application.

I am using VSS version 8.0.50727.42 and VFP 7.0 with SP1

When I use FoxPro to open the Project, the Lock symbols are all missing, and I can make changes without checking out the files.

On the Project Tab of VFP, I have the option now to add the project to source control.  When I try to do that, I get prompted to Login to Visual Source Safe, so I do that and am prompted to select a SourceSafe folder or name a new one.
When I select the existing interview folder and click OK, I get the message "The project is already under source control. Use Join Source Control Project on the File menu to create a new copy of the project." So when I select Join Source Control Project..." from the file menu I am once again prompted to login to Visual SourceSafe.   I then am presented with a list of available projects already under  Source control and if I select Interview, I am presented with a Join Source Control Project screen.

The screen is divided into 2 sections, the Top section is labeled Source Control Project and the bottom section is called working Directory.  Both come defaulted with the options I want, so I don't use either change button, I just click on the OK button.   Then Nothing happens.

Can anyone tell me how I can re-connect this FoxPro project to its original SourceSafe Project folder without Losing the history of changes?