Trtttt - facts you need to know.
1. You do not need a waiver.
2. If you listen to me, and stop believing what you read on the internet, you never will
An absolute discharge means you plead guilty to something and there is no "penalty". One year after you were given it, you MUST go an get fingerprinted for the purpose of a Pardon. This will show the RCMP that the record is there, and then they will remove it. If you NEVER get the fingerprints done, the Discharge will never be removed.
Just like your assumption that Homeland Security "scrolls CPIC for new entries" is wrong, your assumption that the RCMP will remove the discharge without you getting fingerprinted is also wrong. CPIC is not a database you "scroll" or "copy".
So after the 1 year is over, and the fingerprints come back "no record existing" go to the Police that arrested you and ask them to also remove the record. Then you are clean.
You can travel, get jobs, do whatever you want and no one will ever know you ever were arrested.
I have been doing this since 1996 and EVERYTHING I have told you is guaranteed to be accurate and true.