Whenever in any criminal proceedings under this Act any liability incurred by an insolvent or the date or time when the liability was incurred, is in issue or relevant to the issue, proof that a claim in respect of that liability has been admitted against the estate of the insolvent in accordance with any provision of this Act shall be sufficient evidence of the existence of the liability and any such liability shall be deemed to have been incurred upon the date or at the time alleged in any document submitted in accordance with any provision of this Act in support of that claim: Provided that the accused or the prosecutor in those proceedings may prove that no such liability or that a lesser or a greater liability was incurred or that it was incurred on a date or at a time other than the date or time so alleged.