The most recent published case on this topic is CS v Elysium Healthcare [2021] UKUT 186 (AAC), which involved a change from s47/49 to s37/41 when the Court of Appeal replaced the original prison sentence with a restricted hospital order. I’ve updated the “Change in status during tribunal proceedings” page accordingly.
Second, we agree that there is no reason to hold that references to the First-tier Tribunal should be treated any differently to applications in this regard, and indeed every reason why they should be treated in the same way. …
That case was about a CTO reference but I’m pretty sure the same approach would be taken in other scenarios.