That is not entirely clear and there seems to be no definitive answer in other forums. From what I've read, apparently it happens sometime after IP1 when the status of your background check goes back to "not applicable" after being "in progress" for a while. R10 is carried out at the Centralized Intake Office in Sydney, Nova Scotia.Nice. I was going to say you get a chance to upload an attachment in the next step, but someone already said that and you've already done it.
Do you know how to know when we've passed R10?