According to the URL below, I believe All of former Platinum Elite were supposed to get new Platinum Premier Elite.
However, I heard that I need 75 Nights for Platinum Premier Elite when I asked to Marriott Customer Center.
I hoped they are just confused with SPG tier. (Platinum Preferred Guest with 75 nights for being Platinum Premier Elite according to https://members.marriott.com/spg)
Unfortunately, the representative told me 75 nights with Plat Elite of MR is sort of new guideline for Platinum Premier Elite.
I don't think it is not fair game.
What do you think about this issue?