Tenant Mapping with OpenStack Provider

I currently have three OpenStack providers in my manageiq environment. Some customers have the same project in all three OpenStack providers using the same AD group for each project. I have tenant mapping enabled on all three providers. Unfortunately, you can only assign a group in manageiq to one tenant; however logged into manageiq as that one group I see VMs for the three projects in each OpenStack provider. My concern is since I can not assign the group to all three tenants in manageiq should I have a separate group for each project? I fear using one group and only being able to assign it to one manageiq tenant could cause issues down the road. Thoughts?