AFAIK the A fare is a Y up fare. Its like an AS value fare that automatically upgrades a gold except that anybody buying it can auto upgrade. I dont think they count as 50% EQM bonus when crediting to MP but I could be mistaken because it probably depends on what DL is sending it to AS as an upgrade or as F class. Delta, AA, and many others play a game with EQM miles where as even full Y tickets earn extra eqm miles of either 25% or 50%. AS doesnt play that silly game.