Apologies for the late reply! We hook into OnAfterCompile and check if the compiled item is a Business Host class. If so, this triggers a search for any config items and triggers a restart if they are instances of that class. The reason this is only available to IRIS 2019.4 and up is I believe this is when the temporary stop and start functionality was added as we did not want this feature to alter the Production Definition.

This is exactly what I was looking for, did not realize this was a method as I was instead looking at the private position property. Thank you!

See my reply to Ben, below. Unfortunately it seems the first process is not necessarily correct for instances with an upgrade history from Caché to IRIS.