hive's do make false cell cups a good bit, the thing is to look inside the cells and make sure there is no royal jelly and larva, if they have larva in the cells they maybe getting ready to swarm or supercede the queen, if you are still seeing eggs and larva then supercedure is probably not it. this is when it is time to find the queen and take the frame she is own and a couple more frames with bee's that dont have the cells on them and start a nuc or new hive. if you have a few nuc's around start a few others with a cell frame with bee's and another frame of bee's for each nuc.