Clause 306 only provides for the creation of this new class of ineligible claimants. It says that somebody who has made a claim in a county that Canada has an information-sharing agreement with will now be ineligible. IRPA is the reason they would get access to the PRRA if they're ineligible. There's nothing changing the normal PRRA process in the budget bill.
On May 7th, 2019. See this statement in context.