Originally Posted by
ryder1650 (Post # 8)
I have an old Chase Sapphire card that I was planning to just switch over to Bonvoy.
As explained in more detail at the FlyerTalk (FT) Chase Forum, one can only do a product change between two Chase cards of the same "family".
https://www.flyertalk.com/forum/chas...el-2023-a.html
To do what you plan would actually be to cancel one and open the other as new, which would not extend the credit history of the former.