We would need a "Set only for some placec named" button
The "Set for all places named" feature doesn't seem to work. We only see a "Set all" button which indeed sets the coordinates in all lines, but we don't see a button to set them only in the wanted fields.
The "set all" button just works fine, we only still have no "set only for some placec named" button yet. Could be implemented using checkboxes or something similar.
As a workaround you could rename all the "Berlin"s you want to change in "Berlin-temp" and hit "Set all places named"! Would that work?