Per airlineroute.net
http://airlineroute.net/2014/11/28/ba-yyc-feb15/
Looks like effective 10 Feb 2015 the route reverts back to the 763.
I will finally concede yes the BA route appears in trouble.
I'm going to guess they are struggling to fill the premium seats.
Perhaps until they decide what to do with it once and for all.
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