Just found some info on what became of each flying boat;
Aircraft Serial
C/N
NEIAF
Fate
A49-1
765
X-5
Ex NEI. These aircraft were in poor condition when received, but served in the transport role with 41 Squadron, flying cargo into Goodenough Island, Milne Bay and Port Moresby. 1944 entered service with Communications Unit No.8 for search and rescue missions. December 20th 1944 taken out of service and scrapped at Lake Boga due to lack of parts.
A49-2
767
X-7
Ex NEI. These aircraft were in poor condition when received, but served in the transport role with 41 Squadron, flying cargo into Goodenough Island, Milne Bay and Port Moresby. Probably got scrapped in 1944 at Lake Boga due to lack of parts.
A49-3
768
X-8
Ex NEI. These aircraft were in poor condition when received, but served in the transport role with 41 Squadron, flying cargo into Goodenough Island, Milne Bay and Port Moresby. June 4th 1942 made her first flight for the RAAF after a long overhaul. Crew were Squadron leader Monkton, Sergeant Emes, Sergeant McKnight, Sergeant Canny, Corporal Aubin and Lance corporal During. The flight lasted 4 hours and 20 minutes. May 14th 1944 transferred to Lake Boga and stored at the Flying Boat Repair Depot. December 20th 1944 taken out of service and scrapped at Lake Boga due to lack of parts.
A49-4
769
X-9
Ex NEI. These aircraft were in poor condition when received, but served in the transport role with 41 Squadron, flying cargo into Goodenough Island, Milne Bay and Port Moresby. Coded DQ-G. May 14th 1944 transferred to Lake Boga and stored at the Flying Boat Repair Depot. December 20th 1944 taken out of service and scrapped at Lake Boga due to lack of parts.
A49-5
770
X-10
Ex NEI. These aircraft were in poor condition when received, but served in the transport role with 41 Squadron, flying cargo into Goodenough Island, Milne Bay and Port Moresby. Coded DQ-H, 12/06/43. March 11th 1944 caught fire at Port Darwin due to a short-circuit and was destroyed.
A49-6
785
X-24
Ex NEI. Escaped to Perth from a Japanese bombing raid on Broome and served the Dutch Intelligence Agency on clandestine flights to New Guinea until handed over to become A49-6 in RAAF colours in October, 1943. May 14th 1944 put into storage at No.1 Flyingboat Repair Depot at Lake Boga. December 20th 1944 scrapped at Lake Boga due to lack of parts