Rusty,
The solution I posted last July does work. It's needlessly cumbersome, but that's because TurboTax is so inflexible. After you've sequestered your old returns somewhere where TurboTax can't find them, then open the program, which will then need to ask you what state you want. Once you've done that, in succeeding years TurboTax will see only this year's return with the single state in which you are now living. You should be fine after that . . . until you move again.
I don't know how to reach TurboTax support, but with the community's help, you may not need it.
