jabird, I quite honestly dont know why either but I know i have seen it being mentioned here before.
Also in the same breath (same thread, different contributer), it was also mentioned that BMI were considering ORK-LHR against EI as they would pick up on the freight business that EI were dropping ???
Maybe it could be a case of take your pick of which rumour you would like to believe?
Being from Cork, I would like to believe that ever rumour of a new route opening up from Cork was true as it would give me more choice so maybe I am wishing for them to be true!