Going from ZZTakeoff back to Planswift

You can certainly export all the Data and the PDF's with Takeoff and Legend. You can import both back into Planswift, I am sure that once you go to zzTakeoff you will never go back

Not sure how well you would be able to do that but i very much doubt you ever will. I went to ZZtakeoff and never looked back. It's better in every way from planswift and is being actively updated with requested features and bug fixes