I am not sure whats going on with Earn United or whats required to do the switch. Unfortuntately they arent certified partners here at CAP anymore and I havent chatted with Ryan since last year in Las Vegas.
Sorry we couldnt be of more help jmelwak, but it does sounds like you should be able to continue to market your exisiting site with them. If what I am reading is correct all thats really changing is the game software that the players use.