When saving a new subreference using the context item workflow, we will be replacing the selected footnote marker with a subreference. Current behavior would be to edit all reuses by name, but we want to only edit the one selected marker.
This gets interesting in both the reused and not-reused cases: if the reference is not reused, then we're turning it into a main+details footnote. If the reference is reused, then we're leaving other instances of the ref alone, but replacing the selected marker with a different ref. If the main ref content did not appear elsewhere, then note that we'll have to create a main+details.
Outcome
