The first Sighting of EL's i got on MB/BM7 was EL54/57 on 10/8/2004. I think the service started maybe a week before this.
QR only had max 4-6 EL's at this time, but I did note GL108 leading an Up service on 30/10/04 as well as Interail L265 7/10/04
They continued running double and rarely triple EL's until the end of November 2004 until FA/PN's SM9 ceased and G516/534 and X53/54 were transferred to QR ownership.
I noted both G's with QR Badges on 7/12/04 on an Up service.
From there on they ran with any combo of EL/G/X until the end of 2005.
2006 added to the pool, de-leasing some EL's to Graincorp
QRN Livered 2819 (which i believe was the only QR livered loco to run with EL's) from march onwards.
Interail L265/L271, 42105/07/09, 42202/06 and 2208
Some RL's were delivered on Up Services as well!
CLF/P's started appering from around Sept-Oct 2006 therefore releasing the remaining EL's!