In my experience, I have seen candidates allowed the use of the Jeppesen Airway Manual, as well as their VTC, as long as they were not using the ERC H/L. The Jeppesen Airway Manual does not replace the whole AIP package for the exam, so you should be allowed the documents that are not contained in Jeppesen. I would take this matter up with CASA and ASL, as I have found that some invigilators have no clue what they are doing.