How can I review modified tags before uploading in JOSM?

OSMCha shows a helpful summary of tag modifications:

In the above changeset I intended to only annotate sidewalks, but during the editing process in JOSM somehow I accidentally copied and pasted all tags from one street onto many others. If JOSM showed this kind of summary I could have easily caught the mistake before uploading.

Is there any way see this information in JOSM, aside from tediously opening the History window for each of potentially hundreds of objects?

1 Like

If the objects would NOT have seen a modification, if it was not for the slip, then Styles/Modified – JOSM should have made it immediately obvious. Same goes for Ctrl-F “modified”.

If the objects have been touched by the intended edits, this of course would fall short.