I think that is a common thing. It has done it to me on every machine in the office. One for sure fix is to unload the network, change your current layer to the correct one and reinsert the network. Easy fix if you don't have it labeled already or don't have a lot of labels. Not sure if you go into the drawing setting (when you right click on the drawing name in Toolspace settings tab) and setting the Object Layers will force it to the correct layer when you sync the network.
Glenn Pope
Civil Designer/CAD Manager
Green Civil Design