If all of your sugar has been used up carbonating and pressurising the PB there will be none left to add pressure in the bottle. You will still have some pressure from the dissolved CO2, but it will reduce once you put the beer in bottles because a) you'll get some foaming which is CO2 escaping, b) CO2 will come out of the beer to equalise pressure with the air in the headspace of the bottle (unless you don't leave any headspace, which I don't imagine is a good thing to do).