Comment 5 for bug 1931626

Oh, I forgot about this: Since the 3.7 upgrade script includes all records, deleted or not, and removing entries from metabib.*_field_entry will affect their counts, a straightforward upgrade script that updated biblio.indexing_ingest_or_delete and also removed deleted entries from the field entry tables should leave systems in a consistent state. It's site-dependent if that is preferable to disabling all symspell triggers, taking out the trash, and rebuilding the symspell dictionaries entirely.