Hello!
I found one post about this from a few years ago, but no solution. I recently added an EMS Rescue unit. The ARR correctly selects it as a Heavy Rescue, but once it arrives, it immediately leaves - leaving me one heavy rescue unit short. If I select it manually and send it back a second time, it will usually (but not always) fill the heavy rescue role. My guess is this is a bug, or that it’s being released based on the selection to “stand down ambulances” that aren’t needed (I’m guessing maybe it’s reading no patients and skipping the HRV need?). Anyone have a work around?