I am finding that updates to the model XML's and also model updates are not always showing up. In particular, animation adjustments in coding in the XML. When rebooting the sim itself, it will finally show up, but if you are in the sim, pause, 'Build' the plane again, the updates are uploaded into the Package, but not visible in the sim. Even if you leave the flight to Main Menu, then return, the updates do not show. When rebooting the sim completely, it shows. That alone can take several minutes. Radical time eater. :(