This page is listing all RAAF Beaufighter with a detailed history:
http://www.adf-serials.com/2a19.shtml
Some of the Beau in your range have a date of delivery in 43-44 but they are obviously a typo error, as following dates in the AC's story are in 1942. I will say that all of these Beaus were received by RAAF between April and June 1942 by 2 units, 1 and 2 AD (Air Depot?) and later transfered to other units (30 & 31 Sqn, 5 OTU) before the end of 1942, except A19-41 (T5047) that was received by 2 AD in April 1942 and transfered to 5 OTU one year later