No, Dish uses the TSID. The presumption of how it works is this:
1) Dish has a "list" of OTA stations from the 2008-2011 timeframe
2) That "list" includes each station's unique TSID
3) Dish matches the TSID read by the OTA adapter to their "list", matches that to the guide data they receive from (insert guide provider here)
4) Dish displays the guide data
The problems:
1) No one at Dish maintains this list anymore*
2) Stations add channels on occasion
3) Stations change their TSID on occasion
4) ?
5) ?
* That's only partly true, I'll admit. They (almost always) seem to fix an issue when it's related to the primary channel (the -1) as it's almost always the network affiliate that they carry on satellite.
What happens when a station adds a channel or changes the TSID of an existing channel is there's no match in Dish's list, so they just display the station's call letters, "Digital Service", etc (it varies by receiver).
Years ago, you could post details when a channel was added or a glitch like the station changed the TSID and it would get fixed. In the case of the TSID changing, sometimes you could contact the station and they'd realize they inadvertently changed it, they change it back, and the guide data returns.
In the case of an existing channel that changes from MeTV to "?", as long as it existed before 2011 or so, nothing had to be done. The guide data would show up. There could sometimes be a delay but this would be the fault of the station (for not providing the new data to the guide providers) or the guide providers (for not updating their systems.