An appeal is not from the reasons but from the order. This basic point is often overlooked and is surprisingly hard to find explicitly in the caselaw. A recent Yukon Court of Appeal (BC CA) decision is helpful.
Ross River Dena Council v. Canada (Attorney General), 2015 YKCA 16:
 It is a fundamental principle of appellate jurisprudence that an appeal is taken from the order, and not the reasons expressed by the court granting the order. John Sopinka & Mark A. Gelowitz, The Conduct of an Appeal, 2d ed. (Vancouver: Butterworths, 2000) at 6; R. v. Sheppard, 2002 S.C.C. 26 at para. 4.