I just wanted to post that the Reference Database for Hazard Identification (RDHI) shall not be going away. It is mentioned repeatedly within the new guidance for the new regulations. With any luck, this means that it will be receiving a face lift in the near future to make it more user friendly.
Also, all CURRENTLY registered companies should have received a new registration (unless you expire in December) that includes in teeny tiny print way down at the bottom left; that it will also serve as your new license.
Make sure you've got this covered PRIOR to January 15 2019.