Hi Rob,
Welcome to the forum!
I don't recall the particular post you are talking about and as far as I know none have been deleted (except SPAM items of course!). I know I have posted some BIM files of Austalian walls in the pat (eg
http://forums.turbofloorplan.com/index.php/topic,1202.0.html) but I don't recall any windows or doors. Unlike walls, Windows and Doors are easily editable, so you can create new ones with the specifications you want and name you want and even save it to another Group so they are not mixed up with the others.
Too late for you now of course, but it is wise to keep a backup copy of your cataloge and then when you install a new version (or re-install for some reason) you can change back to your personalised catalogue. Have you checked that the old catalogue is not still there or did you choose to replace it when doing the re-install?)
If you have an old model where you used these BIM elements previously, you could open that and save the wall, window etc to your current catalogue. (File / Catalogues / Save Element To Catalogue - and click on it).
The Australian Catalogue for Envisioneer is very extensive and precise, as it is designed in Australia for use with the Envisioneer Construction Suite, which produces professional construction drawings. There is also an Australian verison of TurboFloorPlan (available through Mindscape) that has an Australian catalogue (the Metric catalogue automatically has the Australian elements) but I have not compared it with the Envisioneer one - I don't think it is anywhere near as extensive but it comes automatically with the program, so is only the cost of the program, which is of course somewhat less than the Envisioneer catalogue when purchased separately. That may be an option for you - upgrade to V15 from Mindscape and it may have the Australian elements you want.
Hope some of that helps.
Whereabouts in Australia are you by the way?
Allan