[FIXED] Gates Used by Non-Existent Aircraft

[POTKC]

As you can see some of my gates at JFK are used. Three of the planes that the gates are used by - N301UL, N302UL, N304UL - I sold several days ago. They do not appear on my fleet page. In fact, unless someone bought them, I'm pretty sure they've even been cycled out of the used market when Unk reset it. However, they're somehow occupying my gates. What's going on here?