I'm trying to regaine some room on my hard drive and want to remove many Project clips and DVD menues. Question is, if I save a Projects image file to a dvd can I re-import that image file into Encore and create another playable DVD from it? Thanks for the help.
trapped in time, surrounded by evil, out of gas....
If you create a disc image from your Encore project (File > Build DVD > DVD Image), then yes, you could store that on a DVD and bring it back later to burn an actual movie DVD from it. Encore can do it, and so can other DVD burning apps like Nero. But you won't be able to make further changes to the project with Encore. A DVD Image is like a burned disc- it's the final product.
If you're talking about simply backing up a project file (and all of your assets) to a DVD, then you could edit it later in Encore. But Encore gets pretty picky when you move the project files around, so I wouldn't recommend it.