Way to deduplicate geo entites

In a migration it might be as easy to do it on the way in. But in use I've seen it that people end up making dupes; and it would be good to merge them.

Would a Bulk Operation do it?
With knowing the field that references the entity (geo entity location field) the bulk operation could delete all but the first selected geo entity; it could re-assign all references in the field to the deleted entities to the remaining first one. Assumption: the bulk operation gets the items in the sort order. It'd be a bit of a documentation thing to describe that you need to make sure the first in the sort order has the correct data. Have to think about what to do with revisions too. For the rest I think that's a plausible option?

I made some code to help the backend of this https://www.drupal.org/project/referenced_entity_replace →