It’s got a few answers. For the first one, the logistics were handled by not administering the territory, those were only claims. For the next one, logistics were handled by breaking them up into other territories that would become states since administering it wasn’t feasible. In the third, it was possible, but it caused problems. The civil war was not the only grievance west virginia had. They had been neglected for the better part of a century. Richmond usually didn’t care much about those on the other side of the mountains. In some ways the civil war was just a good time to do what they’d probably wanted to for awhile. Really the logistics are the reason virginia is the size and shape it is today. Now they have a capitol where they can be not cared for by locals.