Batching out items does not preserve the label
I try to follow the pro tip 8 that can be found here: https://blog.simul8.com/simul8-tip-label-based-batching-and-collecting/ Say, we have the situation as in the aforementioned example. At the start point, I assign the unique label. Then in the Check-In, I batch out items (say the fixed number of two), i.e. me and a bag enter together but I go to a separate queue and my bag goes to a different queue as well. When I inspect the queues, only one item (me or a bag) has a unique label. The other item has the label of 0. Any ideas, why is that happening, and how to deal with it?