Deleting/removing value of a key does not remove the key, but should
|Reported by:||AM909||Owned by:||team|
Consistently, deleting the value of a key anywhere in JOSM removes that key entirely. The relation editor in v2255 does not do this, but it should.
If you edit a relation and delete the value of an existing key, the tag is still saved (with an empty value). The tag should, instead, be deleted.