If I understand it correct, then because VRobb is saying that he is just transferring his miner from one btc address mining account to the new one as a username, as long as he was on 5Nd when he does the change, the original account will fall out of its 5Nd and keep the receiving payments, but falling off as it winds back down to zero work done, while the new username account payments climb up to the full 5Nd payment for work done, so what he looses from the older one he gains similar or equal to it on the new account, so overall shouldn't really loose anything, except for his actual downtime during the config change and restart and a very little while his miner maybe settles back into its own preferred pool diff

is this correct?

Steve