Even though classad keys are supposed to be case insensitive, we have users who put in their own + keys with the expectation that the case will be preserved. Once such case is some XSEDE sites wanteing a +TGProject=... in the submit files, which is then checked against a allocation database. It would be more user friendly if Pegasus preserved the case of the + keys from the user specified profiles down to the Condor submit files.