Select the "disk" in flowchart view, or select empty space in the project panel. The "Title Button" is set to main menu, right?
Now select the timeline for your chapter selections. Set the title remote to "last menu."
Does that work?
I'm not certain that it does.
That was a good idea, but it didn't work. Although, this gave me an idea. I clicked on the master timeline in the project window, than selected "Return to Last Menu" in the Menu Remote tab. That fixed it.
Is the master timeline the one that has your chapters?