I've got a site that's using the Constant Contact plugin, and it uses a drop-down selection of the lists that are available. We are using that as Locations – because it is for a 22 location restaurant – and each restaurant has it's own newsletter that it sends out.
Problem I'm running into is that automatically by selecting a List (Location), it overrides the AddNewsletter function to the opt-in checkbox. Is there any way to link the two, so that it adds a person to the List, but also sets it to the Do Not Mail filter in the Constant Contact area?