Our JV3 does this. If you group everything you're printing together in Rasterlink it won't stop between each job since the machine perceives it as a single long run.
Granted, that's a hack, but then I haven't devoted much time to solving this problem since it's very seldom an issue for us because of the way we use our JV3.
However, were I to start digging, I -believe- there's a setting buried somewhere in the JV3's menus that governs whether or not it kicks back over to local whenever it finishes a job. Good luck.