My sincere apologies at taking so long to get back to you. Unfortunately, as we weren’t able to reproduce the issue and haven’t heard of this happening from other users, it will be difficult to find a solution for this without gathering some additional information from you.
One possibility is that the tracks aren’t being registered in the session history due to how the crossfader is being used during your mix. So that we can take a closer look into this, could you please send a video of the issue using our request submission form? Please also reference this topic thread so we can track the request.
Thanks in advance, and sorry again for the delay!