Originally Posted by ryanfinger

Eligibility
If you have a premium cabin fare, -- including Delta One™, First and Business Class -- you may make a same-day confirmed change as long as a seat is available in the premium cabin

ADDITIONAL RULES
Medallion complimentary upgrades do not transfer to your rebooked ticket.


This is straight from Delta's site. Thus, reissued tickets using a certificate or miles should be treated like F or D1 (since they are not medallion upgrades). I don't think anyone is getting away with anything by getting Delta to do their job in terms of allowing the SDC.



I do have to admit Delta could clear this up "if they wanted to." But I think there is advantage on Delta's part in leaving ambiguity. Just my 2 cents...