Wrong debug settings (Project->Debugging->Environment)

VS Addin changes always the "environment" path of debugging, ignoring 64 Bit, so debugging does not work. The $(QDIR) points to the 32-Bit QT Folder. I always have to change this by hand for 64 Bit. When changing anything on one of the projects or the need of reload solution, 64-Settings are again pointing to 32-Bit QT folder and has to be changed by hand again...