Lost Trust Deed

I’m auditing a fund for couple years and the current accountant advised that the trustee cannot locate the trust deed. The previous accountant was only supplied the trustee the signing pages. As advised the trustee have tried many attempts to try to get a copy of fully executed trust deed but unsuccessful. Should I qualify the audit? Is it a reportable contravention? How can the trustee rectify this? The trustee has an i

Thanks in advance!