Counterproductive combine ways dialogue. Missing tags should not be considered a conflict.

[InsertUser]

If a user attempts to merge two features, such as a POI or address mapped as a node with a newly created building outline (via CTRL+SHIFT+G) they now have to manually select every single value for every single tag whether or not they actually contain conflicting values in the two entities to be merged.

As an example:
A newly drawn building:

Way: -606
  Tags: 
    "building"="yes"

To be merged with a previously created POI:

Node: <some positive number>
  Tags: 
    "addr:housenumber"="1"
    "addr:street"="Fakestreet"
    "addr:city"="Exampletown"
    "website"="https://www.example.com"
    "phone"="+1 555 555 5505"
    "shop"="alcohol"
    "name"="An Exemplary Grocery Store"
    "wheelchair"="yes"

After the keyboard shortcut to replace geometry:

1. The user has to click on the dropdown menu for "addr:city"
2. The user has to click on "Exampletown"
3. The user has to click on the dropdown menu for "addr:housenumber"
4. The user has to click on "1"
5. The user has to click on the dropdown menu for "addr:street"
6. The user has to click on "Fakestreet"
7. The user has to click on the dropdown menu for "building"
8. The user has to click on "yes"
9. The user has to click on the dropdown menu for "phone"
10. The user has to click on "+1 555 555 5505"
11. The user has to click on the dropdown menu for "shop"
12. The user has to click on "alcohol"
13. The user has to click on the dropdown menu for "name"
14. The user has to click on "An Exemplary Grocery Store"
15. The user has to click on the dropdown menu for "wheelchair"
16. The user has to click on "yes"

This is incredibly tedious. There is no option to automatically select the non-"none" option if there is no actual conflict, and neither of the tickboxes at the top do anything useful in this scenario.

I think this is encouraging users to not ​keep the history and not be aware of any conflicts as it is now easier to copy the POI to clipboard, completely delete it and CTRL+SHIFT+V the old tags onto the new way. This methos does not bring up a dialogue if one of the tags you are pasting overrides an existing tag, which would mean that the conflict dialogue is actively working against its intended purpose.

Please add a tickbox to default to using the only value present for a tag if the only other option is to delete that data.

[GerdP]

Closed as duplicate of #23555.
see #23305 for why and #23555 for further discussion. It was already decided that the change will be reverted.

[GerdP]

Just as a remark: If you draw a new way which should replace another it is better to have the new way untagged before the replace action and maybe add further tags after. That also avoids the dialog when the old way also has a building=* tag, but a different one.

[InsertUser]

And if, as in the actual example I gave, you are replacing a point with an outline, you are likely to have tags on the new way already. Ones that aren't in conflict because they don't exist on the point feature.

If I was combining ways that legitimately had different values for the building key then this dialogue would actually be doing something useful, which is the reason I didn't complain about cases where there is an actual conflict in the tagging.

[GerdP]

So, if you want to stick to that workflow just set the preference combine-conflict-precise=false