"unidentified" is just a new framing that MoH adapted about a month ago for what they previously referred to as "reliable media sources".
critical point is that the "unidentified" casualties figures and their demographic breakdown are absolutely unreliable, and the recent change in UN reporting reflects the fact that people in OCHA also recognize this.
Also, they are still not ready to completely dismiss the totals, but at least the clumsily fabricated numbers of women and children are no longer used.