patch merging

I usually work in a new venue on a day to day basis with the same show, but sometimes return to an old venue later in the season, and my showfile will have improved. At the moment I load the old show, copy the patch on paper and reload the newest showfile to patch again. Because of this, merging an old patch over a new show would save me time. I would like to know if enhancement #4354 is going to be inplemented in the next software update?
Or is it in V3 already? Still using 2.6.0 on a rental RH.
Greetings, Joris:18:
Related