<prompt> Human: As the title says, once upon a time I wanted 60k American Airlines miles and have had the card for many years. It comes with a 100 annual fee that Im tired of dealing with but dont want to close the card. I have 4K of debt on this card and want to switch it the double cash back as there is no annual fee and I can put it in a 0 interest account for 18 months and pay it off. Am I able to change my current card to the Citi double cash card without any repercussions or credit dings?  <response>: The 0 interest is only for new card signups, it doesnt apply if you change into that card 