I find Cisco/Emily's findings odd, since that means this is basically what happened:
at 11pm last night (GMT -08:00) I stopped playing, so I switched my deck to rare farm and waited fo the saving..confirmed! message. I have not logged in since then.
About 6 hours after this, Cisco posts and says that my normal deck is in the T50 still
About 12 hours after I logged out (6 hours after Cisco's), EmilyMoby says that my deck in T50 is my rare farm one.
It is strange that it would change my deck at some point 6 hours after I logged off, right?