I've just now moved our email list signup form off of the MC html form and over to GF, now that the GF add on supports groups (hooray!).
We are getting ready to start registrations for Vacation Bible School for the summer and ideally, I would love to have the moms who register also be added to a new MC group so that we can send out a mass email to everyone who is signed up for VBS. I know all of the steps I need to take to add this functionality to the registration form, it is easy enough.
However. Many of our moms who will be signing up are already on our MC list, and in one or more groups. I did a test with the form above and although MC correctly received all of the data for an existing subscriber, instead of adding the request to that group, it added it to the group and removed it from the rest of the groups.
(What I mean is: we have groups A, B, C, D. My email was registered for all four groups. I used the form with my email address and checked just box D. MC removed me from groups A, B, and C. If this were to happen with VBS is would be a huge headache for me. The VBS form would only have a check box for group V.)
What I need to know is, can GF handle updating subscribers without removing them from groups that they are already part of? I contacted MC and they suggested that I either use their HTML form (which won't help me with the VBS thing) or dig into their API, which I'd really rather not do. I am reasonably certain that I have my GF/MC add-in configured correctly.
Thanks in advance for any help you can give!