That's good to know. So how long does the 1 year expired checks take to re-do them again? The agent told me that IRCC has the right to recheck everything until the oath. I am not sure if it is true. But again the security check valid for 4 years is a bit long (what if someone does something after security clearance, but before oath, do they still get citizenship? I guess no one knows.https://www.canada.ca/en/immigration-refugees-citizenship/corporate/publications-manuals/operational-bulletins-manuals/canadian-citizenship/grant/adult.html
Here is the guideline they use to process files. Immigration/Criminality for 1 year and Security for 4 years.