Steve,
I'm just guessing but the ranger at Lysterfield may not have direct access to update his section of the parkweb.vic.gov.au website. He may be taking the easy way out as a simple email to Andrew gets the LDTR website updated whereas it possibly requires multiple government department forms submitted in triplicate with many weeks notice to get something posted to the .vic.gov.au website.
This doesn't make it right but if its close to the mark I'm happy for the ranger to spend his time working on the park rather than doing paperwork in order to get updates posted to the correct website.
It would also imply that in order to improve the situation, any constructive criticism should be directed to the state government who I'm sure will act swiftly once you bring this issue to their attention.
I should emphasise this is a guess and someone should check before this line of thought goes much further.