which is not as one wished. Automount is for startup of the software (PC), to mount a formerly unmounted drive there is the mount command/button.
BC 1.5.410.149 on Win7x64, 'Advanced Mode' enabled
Thanks for the report. It's actually not a bug, but intended to work as such ("Automount when possible"). Nevertheless, we will rethink this behaviour and not mount the drive on edit if it was not mounted before.