The matter was raised in the Burnie Magistrates Court on Wednesday in relation to the case in which 16 horses were found dead following a Bass Strait crossing.

Lawyer Robert Taylor represented TT-Line, the owner of the Spirits, which is charged with 28 counts of transporting a horse across the Bass Strait and failing to ensure the horse was individually stalled, and one count of using a method of management reasonably likely to result in unreasonable and unjustifiable pain and suffering to the animal or animals in the group.

The company has pleaded not guilty to the charges, and Mr Taylor has attempted a range of legal arguments to have the charges dropped since pleas were entered in 2019, but has so far been unsuccessful.

The owner of a number of the hoses, former Australian polo team captain Andrew Williams, had also pleaded not guilty to related charges but changed his pleas to guilty earlier this month.

TT-Line has maintained its not guilty pleas and on Wednesday afternoon Mr Taylor raised the issue relating to the veterinarian's evidence.

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He said the proof of evidence provided included a document with the word "corrections" included in the filename, which he said lead to "the almost inescapable inference" that there was a previous iteration of the document.

Crown prosecutor Simon Nicholson said he would seek clarification on the matter by close of business Thursday.

Magistrate Leanne Topfer adjourned the matter next to August 4 at 4pm.