Ann: EcoGraf HFfree Australian Patent, page-79

Yes,

They wanted to remove an audio file, the audio file was based on a earlier presentation Dorfner completed, where RNU and Dorfner thought it explained a HF Free process, Once EGR reviewed the file, they determined the Dorfner Process still used HF Acid.
EGR objected to this audio file being removed from the evidence.

The rest of their objection was pretty meaningless,

If you want to read the amended objection, go to the following link,
http://pericles.ipaustralia.gov.au/ols/auspat/applicationDetails.do?applicationNo=2021261902

Download the highlighted file, all of the red text are changes to the document.