As we know the documents you supply for your Thai wife to travel and live in Australia has to be very substantial and you have to make sure that the documents that you do supply are correct and translated in to English where needed.
My advice to the applicant is to make sure that they take a full copy of the application before supplying in case the Embassy official requires copies of a document or they presume they have not received it will save you time and expense.
We have seen over the years that extra documents are requested even if already supplied so make sure that they are readily available so no delays with your Australian Settlement visa application.
Copy all including application forms.