Thanks to the resurgence of this thread, I found I was the victim of 80K deducted from lifetime miles for two years of Platinum rebuys.

Called to complain to a supervisor at the Platinum desk he:

1) gave me 40k miles (both lifetime and redeemable)
2) said if I got within 40k miles of lifetime Plat (I'm 115k now), they would comp me Platinum again for a year
3) conceded it wasn't disclosed

I asked for 80k but that was more than this guy could give (or so he said). but I figured I'm at least whole, with the extra points from Platinum over two years adding up to around 40k.

Thanks for the heads up, previous posters