Originally Posted by
isle-hawg
I can't say with certainty, but I do not believe it will have a negative effect for Chase 5/24. I have downgraded a Citi AA card and converted another to a doublecash card and my credit report did not show closed cards or new cards, instead the converted cards kept the history of the previous card.
You could confirm with the CSR prior to making the conversion.
I just did this too (AA to Doublecash), a few days ago, and then got really worried I screwed up because I was at 4/24. Nothing has hit my credit report yet, and I got approved for the Sapphire Reserve so I'm not concerned about it anymore.
As a side note: The conversion of my Costco Amex to a Costco Citi card did not show as a new card, either. I'm actually not sure where it is on my credit report at the moment.