Does the match also extend to lifetime status?
Hmm, just looked at the FAQ, this does not sound good for an SPG Lifetime Plat:
If I have Lifetime Status in one of the programs, will I also get it in the other program when I link my accounts?
We appreciate your loyalty! Lifetime Status is specific to the program that you earned it in. While linking accounts will not result in Lifetime Status in the other program, your Elite status will be matched to the same Elite tier in the other program. Any existing Lifetime Status you already hold within either program will still be enjoyed within that program. We’re working on more ways to recognize your loyalty and Lifetime Status as we work towards harmonizing the programs, which we don’t anticipate happening until 2018.