I just noticed 186K miles were deducted as expired. Within the past month.
I could not find where they listed the expiration date on my account and never received a warning email.
At one point I held status and transferred and redeemed miles over the past few years. The rolling nature confused things.

I just transferred a bunch of Marriott miles to beef up my account for a redemption, but now I fear it is a lost opportunity.

Is there any way to get these back?