Current setup on a site is this:
EE v2.4 running MSM 2.1.1.
The default site has CartThrob installed for purchases, and a second site is running Profile:Edit and thus allowing the Default site to also use it to manage Profile:Edit entries for member profile fields.
The problem I’m having is that the site that CartThrob is installed on, is not displaying the Profile:Edit fields under the CT admin ‘Members’ tab, so that the member data fields can be matched, and thus populated into checkout forms. It’s certainly no deal breaker at this stage, but it would be nice to have it working.