The manual is slightly unclear but hints that performing a track clear purges any virtual track that is not the “active” one loaded up onto the physical track. Is this the case? Kinda hope not.
Very clear. A good design choice overall IMO as it prevents a user from deleting or recording over tracks.
Of course all things are a trade off - if one wants to clean out all tracks including the virtual layers without deleting them, then one has to make a few “passes” across the board, loading new active layers VT2, VT3, etc and hitting the clean out each time.
I am thinking this is also where having a track sheet can really help.