Polyclar, To rack or not to rack?

I racked my amber ale to the keg a couple days ago. After 48 hours at 31 degrees I stirred in a polyclar slurry and plan on letting that sit for the next 4 days. Then I’ll attach my CO2 and push all the crap out of the keg.

Do I really need to rack off from this stuff? Or can I just blow it out of the keg by dumping a few pints and then carbonating the beer? I do that with gelatin. It blows out in about 3 pints and then I carbonate in the same keg.

Does anybody have any real experience using this stuff?