Australian citizenship/ immigration process question?

Can the case officers request people to provide documents, ie, qualifications, lease, utility bills, etc, from years ago,when the applicant have already provided all of the documents that was listed on their official website??
Is there anywhere that I can go to find out more information?

Answer:
Each case is treated as an individual case so expect that your application will be subject to whatever the IMO requires.
  • What do you think about the Danish village of Solvang in California?
  • How can I check the location of ICE detainee online?
  • What does a British citizen with permanent residency in USA need in order to visit Ireland?
  • Where can I find statistics about Canada's Immigration over the last 60 years?
  • If Pres Calderon really makes Mexico better..?
  • Why did Asians immigrate to the united states from 1860-1900?
  • Texas D.A. considers Charges against Guard troops attacked at Mexican Border can you believe this ?
  • Undocumented immigrant workers?
  • I have a USA passport that says I was born in Canada, but actually I was born in USA. What to do?
  • Was the Movie Brokeback Mountain inspired by the racist Organization called Minutemen?