I’m in the same position. Got my Amex Surpass/Ascend in October, and was sent the new Citi converted card to activate 12/30. I didn’t want 2 annual fees, I wasn’t sure about the effect on my credit report of canceling a card, so asked if I could downgrade to a no AF card. They said sure, and offered 10,000 points to keep new card and 5,000 to keep old. Since I already have $1,000 in 2018 spend on the old card I kept that one for 5,000 points, and downgraded the new card