I recently had to go back and file an amended return for one state and file a return for an additional state for the past 5 years. It made my life a lot easier to be able to just install the past 5 years versions of TurboTax Desktop which I had saved the installers for. I was able to run through this whole process using the tax rules that were in place at the time.
Not sure if this would have worked on a web version or not, but I was pretty happy to have this option available to me.
Not sure if this would have worked on a web version or not, but I was pretty happy to have this option available to me.