Comment 1 for bug 1904932

An issue here is that when the units are read from the model for export, all units are included, even ones which are dying or dead. These should be excluded I think.

The "--to" is empty because the unit's assigned machine id is empty. But this is set at the time the unit is deployed so it's not clear at this point how it got to be empty. Maybe it is reset as part of the cleanup process done when removing the unit or the machine to which it was deployed.