1. Not necessary and until you upgrade all your files it might be a good idea to keep it. AC12 will keep working until it expires and then you can remove it
2.No, go to myarchicad.com to request a new one for AC14.
3.Yes.
4.Nothing extraordinary, AC14 includes 'Migration Libraries' to handle most of the problems.
Remember to read the Getting Started Guide under the Help menu to see what's new.
Eduardo Rolón AIA NCARB
AC27 US/INT -> AC08Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
another Moderator