Pro Tools | First Projects : Saving a Project : Reverting to a Previously Saved Project
 
Reverting to a Previously Saved Project
If you have made changes to a project since you last saved it, you can discard those changes and revert to its previously saved state.
To revert to the last saved version of a project:
*Choose File > Revert to Saved.
*Reverting to a previously saved project can also be used to open a project with all of its plug-ins active, after opening it with all of its plug-ins inactive. See “Opening a Project with Plug-Ins Deactivated” on page 51.