Was gonna trade my 14 CVO Limited for a 15 CVO RG & since i already have the TTS map installed was thinking i could maybe swap ECM from bike to bike. The salesman actually suggested this. If it would work would be cool since they are delivering the bike to me and i could do the swap... I was trying to avoid having to buy another TTS tuner. I was being cheap....LOL..
I had a sneaking suspicion that was the situation.

The dealer can do the setup routine to assign the ECM to the bike and to marry TSSM, just like they have to do when replacing an ECM with a new one for any other reason. If I remember what Steve Cole said once before when this subject came up, the TTS is married to the unique serial number of the ECM, not the VIN of the bike. You may want to verify that. You may also want to verify there really is no difference between the two model years as far as the ECM's are concerned. I haven't been able to access 2015 part numbers yet, so I have no idea if any change was made.
Find out how much the dealership is going to charge you to do the swap and setup of the ECM. You may find you won't save all that much versus just buying another TTS and giving the current one to the new owner of your old bike.
Jerry