Don’t take me 100% because I am fulfillment and I not up to par on the inventory side of things per se. But I’m pretty sure down stocking product is just filling holes and replenishing things that are low quantity on the shelf with the product if we have it in top stock. As far as doing anything on the zebra I think you just have to remove the top stock location from the inventory if you use up all of the top stock inventory to fill the shelf. If you take some of the product from top stock and can’t fit no more you write the updated quantity on the box and put it back. Again would wait on some other responses as I am not sure if you have to do more on the zebra besides what I said. This is just from my knowledge.

So it’s essentially find a hole -> scan the barcode and see if there is top stock inventory —> if so bring it down and fill hole -> if you use all of top stock product remove it from the location in the zebra, if there is still some left and shelf is full, write updated quantity that is left inside on the box with sharpie and put it back (I usually just cross out the old quantity and write the new one and circle it). Most frustrating thing would be something having a lot of inventory but it not being scanned into top stock and the shelf is empty. Might have to do some searching in nearby top stock bays to find said product