I had a google about to try and educate myself on AR and Schedule Tracking (were they two names for the same thing or different to begin with) and came across a link on another forum to this document
http://www.etsi.org/deliver/etsi_ts/102300_102399/102323/01.04.01_60/ts_102323v010401p.pdf which in Chapter 11 at least offers some info that might be something to dig into. I'm no clever clogs but it reads like there are flavours of AR which just track time, and those which track event ID. It cites a field called 'identifier_type' which if set to 00 will just activate at the prescribed times regardless of what the running order is doing on the channel. If set to 01 or 10 then event ID becomes relevant.
So, knowing there is a data field that relates to AR can we find out what the value was for successful or failed recordings? And would this help? Don't know, just trying to chip in!!