It doesn't matter. At some point before this happened, they were all the same person. The Harry who got sucked out the airlock to his death WAS the Harry who did that cool rolling phaser shot on that Vidiian. So regardless of who was the original and who was the duplicate (if the question can be answered at all), both were quite real. Ergo, the Harry who continued with Voyager was eminently promotable.
My only point was that calling one V the original and the other a duplicate, without stronger evidence than I've seen thus far, doesn't really seem accurate, as both have equal claim to being the "original".
So yes, since they're both the same Kim despite a few hours(?) of different memories, I don't see why that would have any impact on promotability, though I'm guessing this entire rationale may be a bit facetious in any case.