So I have made the modifications to the file listed in the other thread, you can view it here https://gist.github.com/codytooker/56dd0bc7a6893d5e7bf5a5c25bc5e8ea
It probably needs to be clean up a bit with better comments but it works for what I need.
Basically I had to test which field was coming from a user and if so have to remove “user_” from the ID, later on in the file I have to use get_user_meta and update_user_meta in places instead of post_meta, I do this with a flag to easily switch between both.
