Originally Posted by
rogo
That seems like awfully risky for me to be the guinea pig on.
Can't disagree. Here's a DM I got from the Skymiles team in 2017:
Originally Posted by SkyMilesTeam
Dear iflyalexair,
Thanks for reaching out to clarify how the Miles Boost benefit works for product transfers. We’d like to clarify that the upgrade scenario does not work in reverse. For example, if a Card Member begins with a Reserve Card and reaches $60k in spend and earns both Miles Boost, then downgrades to the Platinum Card and spends an additional $50k, no additional Miles Boost will be issued by Amex.
Thanks,
The SkyMiles Team