They consider a status by promo same as a "gifted" or "complimentary" status. In my case, last year's part-year Gold promo (2 K fare RTs) drops me back to nothing in August, and still docks last year's MQMs by 50k, and if the rollover balance ever shows up, I don't care. Ineligible for this promo, and "Hello, AS".

Here's the T&C:

"Rollover Medallion Qualification Miles

Rollover benefit means Medallion Qualification Miles earned in 2014 above a member’s earned Medallion threshold level will roll over to 2015 and count toward 2016 Medallion status qualification. Members who receive complimentary or gifted Medallion status are ineligible for rollover MQMs unless they earn more MQMs and Medallion Qualification Dollars (MQDs - U.S.-based members only) than the gifted status requirement. For example, if a member is gifted Silver Medallion status in 2014 and also earns 30,000 MQMs and $3,000 MQDs in 2014, s/he will be able to roll over 5,000 MQMs since the Silver Medallion requirement is 25,000 MQMs and $2,500 MQDs. If a member is gifted Silver Medallion status in 2015 and also earns 30,000 MQMs and $3,000 MQDs in 2015, s/he will be able to roll over 5,000 MQMs since the Silver Medallion requirement is 25,000 MQMs and $3,000 MQDs."