I have taken advantage of this perk glitch to match me from the old Platinum to Mlife gold, then back to Hyatt explorist, as well as Total rewards Diamond.
This is a big perk IMO to any Hyatt explorist & Globalists looking to take advantage of Mlife resorts (Vegas and now Borgata) as well as Caesars resorts (Vegas & AC). The benefits include special lines, discounts, room upgrades, free parking, and NO resort fees for Caesars resorts (my biggest benefit)
Since the status matching go both ways (Hyatt to Mlife and vice Versa), once you maintain the status once, you should be able to keep your status at both indefinitely.