Question about Pilot2ATC and PF3 AIRAC Cycle?

Hi there, Why does Pilot2ATC need an AIRAC Cycle but PF3 doesn’t need it?? I have been using them both from time to time and just was wondering about the differences between them both .Any help is greatly appreciated. TIA…

P2A requires due to the route planning feature. Using Auto plan is a very efficient function to automatically connect SIDs and STARs. The plan would then be exported and loaded into the sim.