I am also with Danske with Credit Card - I contacted PTSB, who will be sending me out a "package" so I can transfer my current Credit Card a/c with Danske to them. I was going to close it, but that seemed like a lot more hassle.
After talking to PTSB, moving over the current balance was easier. Just my thoughts on it. PTSB will require salary slips / last 6 months credit card statements, ID. Even for current customers. The joys!