Debug a specific Workspace/Workkset

Hi, We have a dozen workspace/workset combinations for different clients, how do I create a debug file for a specific workset?  If I add the -debug switch I can't pick the build I want to debug.  And the configuration explorer only allows the default C: location (Gives errors when I add a command switch).

The Show Configuration keyin doesn't tell me which .cfg set the variable, or even which level it was set at.

Any help on a better way to evaluate the configs appreciated.

MS version