"Guess"ing missing fields in addresses overwrites existing values

[aceman]

I noticed this behaviour:

1. select an object that has addr:street, addr:housenumber (sometimes addr:postcode) set.
2. the plugin flags it as Incomplete address. That is correct.
3. I click Guess on this address, hoping addr:country and addr:city gets filled in.
4. That also does happen fine.
5. So I select the line (address) again and click "Use".

This applies the tags on the object but sometimes also overwrites the existing addr:street or addr:postcode with a different value (e.g. from neighbouring street). The user does not notice this if he does not have the object selected and watches the tags.

This is when using the pane in the side panel.

[OliverW]

Existing tag values are now kept - please update to [o29971] and give it a try

BTW: Excellent description!