AC YYZ/EDI
With AC ' vouchers $$$$ ' in hand for future travel, (hopefully from EDI!) there is an element of self interest here!
Having travelled and spoken to FAs who operated this service with ACr in the 2019 season, they worked for the most part YYZ/EDI & GLA together. e.g. An EDI arrival on a Monday would see the FAs on a GLA/YYZ the following day. Perhaps further changes to come with regard to YYZ/GLA?
As others have stated, I see a mainline A330 has been substituted on most of these former ACr routes into mainland Europe as well as the YYZ/MAN service. AC must anticipate that they will be able to sell their Business Class 'Signature' brand on these flights or alternatively for the mainland Europe routes into YYZ/YUL, does the MAX lack the range for a westbound TA flight? - Perhaps a combination of both?
The AC YYZ/EDI route is sold as Economy & Premium Economy as it was with ACr. For info, the AC YHZ/LHR, to be reinstated with the MAX, is also showing bookable in Economy & Premium Economy.