this is exciting to hear about your re-brand! What steps did you take to let your community know that you were changing it up?
One of my friends just went through a similar process of re-branding her social communities when her business decided to switch from B2C to B2B. She shared her story here: http://www.myfides.co/blog/a-social-media-rebrand-how-to-successfully-switch-gears-and-restart-your-social-community/
In your re-brand, did you have to rebuild your social communities or was your rebrand similar enough that you could keep the same communities? Seems like a large project to take on!