I think 4514 is the old intersection before the Moorebank Av realignment. This is now replaced by 4988 at the new alignment.

Thanks for the heads up. The info I have from TfNSW is that 4998 is the "DJLU Access" and 4999 is the "IMEX Terminal Access". I haven't been able to field verify these details, so your suggestion may be correct.

Looks like this was deleted in error. This extension appears to only run on a couple of weekday afternoon trips beyond the main terminus at The Vale Shopping Centre. This extension is not shown on the map in the printed version of Timetable 18. I'll get the extension data added back in.