Being the non-real person flyer I would assume so, since if refuelling quals were important, then life'd be alot easier for pilots. I assume that maybe up to 1.12a not enough hard information was available (though I'd even quickly discount this one myself) or maybe they just scripted it to have it as a placeholder, then come back to it and then implement it how it should be. Needless to say Lock On by itself is a complex sim, so that probably was a lower priority (along with the Su-33 itself in some ways) than some of the other issues at the time, given that only one player flyable can do it.