Hi Alex,
4 questions:
1) If I switch to 2015, will I lose all of the work I’ve done on Denali?
2) Can I eventually go back to Denali or will it not work with Denali?
3) If I deactivate all of my plugins will I lose what I had done with those (i.e. the work I did on the Contact page)?
4) What is the reason for having to do this?
Liz