When removing a location of an object, all child nodes will be removed, too. This happens silently and without going to trash.

Steps to reproduce

1. Create a Page "A" with Location L1
2. Create a Page "B" as a child of L1
3. Add another location L2 to Page "A"
4. Set Location L2 as main location
5. Delete Location L1
6. Page B has gone and cannot be found in trash

Expected behaviour:

1. Confirmation message, that all children will be deleted, too
2. Trash the children instead of removing it directly

Note
In v3 (3.2.3, 3.3.0) there is also a message:
Could not find 'location' with identifier '<location_id>'