No clash with the Byrne origin, no. The clash is Mantlo's with Byrne. I mentioned this on my site, where I posted about this issue:
There is also a minor clash with the Alpha Flight Special - at the end of the FCBD, the military brass makes a decision about funding:Not much had been known about his recruitment until now, except for the known continuity errors on Mantlo’s part in Alpha Flight #46, when Jeffries mentions to Kara, “Bochssie an’ I go ‘way ‘way back, before we was Betans, even”, contradicting what we know of their first meeting in Alpha Flight #16 and the fact that Jeffries was never in Beta Flight.
But nothing in conflict with Byrne. I'd consider it canon.Interestingly, Wolverine's success in this mission results in "the brass" authorizing the first round of funding for Alpha Flight, a name which is misplaced by Mac's enthusiasm, as the first team formed was just "The Flight", and the teams divided into lettered tiers later on.
Love,
rplass