When you do an item reclass to move an item from bin to bin it sets the new bin as fixed in the bin contents. The majority of my customers do not want this behavior. They manually set a default bin and possibly one or tw fixed bins for an item (alternate prefered stock bins. Then they may put material into a different bin if these locations are full but they don't want these bins to be fixed bins in the bin contents as they are one time temporary bins.

It would be good to have a setting for "Create Bin Contents as Fixed" that could be set to False and bin contents would be created with fixed = false unless it was manually set or was the default bin.