Save Microsoft Project files as
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\16.0\ms project\options\save Options
defaultsaveformat enum - Project (*.mpp)
->
MSProject.MPP.12 - Template (*.mpt)
->
MSProject.MPT.12 - Project 2000-2003 (*.mpp)
->
MSProject.MPP.9
Description
Specifies the default file format that should be applied when any Project file is saved. If you enable this setting, project files will be saved with the format you specified. If you disable or do not configure this setting, the user's default setting is used.