I currently login using my JACC visa credit card number as the username and the associated password. Never used a nickname. After logging in, I see details for both this visa card, and my existing premier miles master card.

I am now closing down this JACC visa card, and not getting a second premier miles card. citi have already transferred the credit limit from JACC and added it to the existing Premier miles mc.

So the JACC card number is effectively defunct and cancelled. Now, when I login would it still be with this definct JACC number, or would it be using the premier miles card number, and the old JACC password?