For events that have more than one audio stream, the Add Missing Stream for Selected Events feature, during the restore process, overlapping the existing streams on the restored audio events. One stream overlaps the other in the same restored audio event.
After the restore process, moving the events causes the active stream to switch itself to the next stream.
This messes up editing a bit at certain times, for example: it is not possible to select the audio channels of multiple selected events at the same time. It is necessary to manually separate or remove the streams from the restored audio events for it to work properly.