IH, it's not more than a signature on a piece of paper.
It doesn't erase your history with W or change anything except for legal reasons.
Once my ExW and I divorced, I thought it was completely and totally over. 2 months later, she is crazy obsessed with me and chasing me. Begging me for another chance. Sending me nude texts to try and entice me.
A piece of paper means nothing. Your W is VERY conflicted, this is so far from over, IH.