If your project uses the Qcat, you may find that you will need to revise your project's Q designations accordingly. If you use a Filemaker database or similar for your catalogue, I can send you a list of new designations to import, overwriting the old ones. Just email me.
If and when your project needs new Q-numbers, send me a list of your proposed designations and other relevant fields (as per the documentation); or ask me for a clone of the Filemaker Qcat database, to fill in and email back to me.
If you ever notice mistakes, duplicates or omissions in the Qcat, or have any questions about it, please email me about that too.