I am an individual who bought v10 then upgraded to v12 when I was designing my house. I ended up having to hire someone for the "design" because the county required it. So I sent my design to someone and she did what she had to do and sent it off to the engineer, etc. Problem is she used v15. I need to get in there to get some specific measurements and framing and things that were not included in our final plans. In order for me to open it I have to subscribe to v15 and shell out another 1k to check what I need. But am I reading this right that I'll only be able to open these for a year unless I keep paying for it very year??? I had paid over 3k for the original program and I understand upgrading if you want all the new and "live" features, but a monthly subscription when I'm not an architect seems excessive. Is there no way to permanently upgrade the one v12 so I don't have to keep going back and upgrading or continue to subscribe to open my plan I already made?? I understand not having the upgrade perks and new ssa and things like that, but that isn't necessary for me since this isn't my career.