Having previously certificated the former Canadian Air Force helicopters, I don't think they'll have any problem obtaining a new TC for these machines. The likelihood of adding them to TCDS VR507 is extremely unlikely, as all references and limitations are directly applicable to the CH-136 Kiowa configuration, publications, instructions and limitations. A new TC will have all the applicable references to the Australian Army configuration and manuals which will be specifically required to form the basis of certification. They are obviously already capable of producing all the updated certification documentation for a Restricted TC from their previous TCDS for the OH-58A.