You really shouldn't use the organics racks for conventional if avoidable. When organics come in contact with surfaces that had conventional produce on them, you get commingling and best practice says to TOSS any organic product that commingles. As you said, you would also have to 3-step clean the racks to make them suitable for organics again. If possible, I would have separate fast movers for traditional produce and organics. I'm in a super so I have quite a bit of organic stuff and I also have the cooler space to support a lot of fast movers. I currently have one for conventional wet rack, organic wet rack, organic berries/grapes, bagged salads, bagged veg/hummus and an empty rack for everything else on stationary shelves/steel. My store doesn't do a ton of organics sales so I try to make them truck to shelf as much as possible. Berries, grapes, iceberg, romaine and celery are about the only things I intentionally keep back stock so the occasional apple or TF clamshell can just go on my tiny organic shelf in the cooler.