It's more like trying to upgrade the my own license, the EASA one. Not the HK CAD one. I just don't want to keep revalidate the MEP IR rating each year. At the rate of inflation, it will be a fat chunk of cash amount of money. I'm not sure if I remember correctly but if my IR expired more than 7 year, it will be removed from the license and redo the ATPL exams. Unless if I upgrade to ATPL then it be on the license and only need to renew or revalidate. Feel free to correct my wonky knowledge.