In Sequencer if a sequences if used on another level, even if it’s duplicate level, connections are broken. So the various object tracks turn red and require user to go manually go through each one and re-selecting what is likely to be the same object, Please consider doing what they do with video editing software. When you select the first item (of several) bring up a dialog to ask if the system should search in the place to reconnect all layers. If so, it just auto-connects anything with the same name in that same level. Even better would be option to to reconnect all to current level.