Save Active Project only

Category

User Configuration > Administrative Templates > Microsoft Project 2016 > Project Options > Save > Auto Save Options

Scope

User

Registry Key

HKCU\software\policies\microsoft\office\16.0\ms project\options\save

Description

Saves only the active project at the interval you specify. This setting is only used by Project if Auto Save is turned on. If you enable this setting, Project will only save the active project at specified intervals. If you disable or do not configure this setting, the user's default setting is used.