CO19 — a restricted user's own save stores a full-width Record Change: the unrestricted writer
reads the denied column's stored value in FullRecordJSON, ChangesJSON names only the edited field,
and the restricted saver's read of the same row is projected.
CO19 — a restricted user's own save stores a full-width Record Change: the unrestricted writer reads the denied column's stored value in FullRecordJSON, ChangesJSON names only the edited field, and the restricted saver's read of the same row is projected.