Log book may have been water damaged after quarantine washing perhaps? most vehicles are bring sold with theirs from what I have seen.
Ok, some information for you that I have been given.
There is no correlation between engine numbers and VIN at all. 49-222 was originally built with engine number 995006 so it has had an engine change, and form what you describe, yours sounds like it was one of the vehicles completely rebuilt on the line at Bandiana around 2007 ish.
Isuzu engine numbers were allocated in blocks of 100000, so vehicles in different 100000 number ranges are likely to show up as the engines went into a number of different vehicles. Early Isuzu engines appeared in Series 3 Stage 1 vehicles and early civy 110's. These were in the 700000 range. Early Perenties started in the late 700000 for the first fifty or so vehicles. They then moved through the 800000 to 900000 range. Late Perenties are 100000, 200000 and 300000 ranges with Bushranger built vehicles starting in the 200000 with some 400000 and 600000.
The six digit VINs are allocated by the UK and are linked to the CKD pack supplied. CKD packs generally contained enough material for twelve (12)
vehicles per pack and therefore each pack was shipped with 12 VINs allocated to the material as the identity of the vehicles to be built from that pack. In the Perentie case CKD packs were not complete vehicle pack as there was the Isuzu engine, local Chassis and many other local components. Accordingly, the VIN number ranges could be all over the place just like the engines. For example we could have early vehicles in an 800000 range and later ones in a 300000 range.