I haven’t got access to their database yet, it’s a speculative question they’ve asked me. I didn’t know if it was possible. I’ll have a look at the APIs thanks.
I was thinking along the lines of gaining a copy of their database and importing users into the wp table but that would only have been a one time fix for past users.
Now I know it’s possible I’ll have a root about and see if I can advise them. They have a coder for their existing site so I’d only have access to the wp site so I may have to tell them either I need access to their original site’s code or they need to do that part using their existing coder.
Thanks for your help.