Agreed.
Also, for those songs that are recorded in S1 and using the built-in versioning, the same replacement function is needed to change the version of a track that you want to master.
At the moment it retains and always rebuilds the version that was imported (which is sensible behaviour) but changing it to a different version requires deleting and reimporting as though it were a new track and having to save/recreate the mastering chain/track layout (which is bad).