Between me and my wife 2 bags have continuos baffles and 3 have split top/bottom baffles. I never think about the baffles on a trip, but only at home when airing out the bags.
Surprisingly the only issues with the down shifting were for the split baffle bags where the top down would shift to the sides (Rei Subkilo 40, MH Phantom 32, REI Downtime 20). At least in my case, the bags with countinous baffles (WM Ultralite, Rab Quantum 800) are higher quality and warmer, which might explain it. One might think lower quality bags use split baffles so they can get away with using less down.