I’ve poly painted my model and now I want to make a texture map from that painting. Things have changed from before and I am not sure how to do that now.
Any help would be appreciated! 
Ahhhh, it’s part of the MultiMap exporting now…makes sense. 
Aside from MME, you can still create it from the Tool palette. Expand Tool: TextureMap: (Create) New From Polypaint.