I think an auto save feature would be a good idea.

So that if something unexpected occurs when editing a profile that the profile would be automatically saved even when the edit window is open.

Perhaps a user chosen option to set how often the auto save feature performs the save feature, 30 seconds, 1 minute, 5 minutes, whatever.

For example I was editing a profile the other day and the power went off due to them working on the line. Needless to say that when I rebooted the computer and reopened DVD Profiler all the edits I had done were gone, so I had to restart.
If the program had an auto save feature at least some of my hard work would have been saved.

Or you could just hit the Apply button at regular intervals. Thay way you control when it's saved.
But as long as it can be turned off, I have no problem with an automatic save.