What about this?
Professional to Amateur
Players registered with the PDGA as Professionals may petition the Tour Manager for reclassification back to Amateur.
Amateur to Professional
An Amateur wishing to change their classification to Professional may do so by contacting the PDGA office.
An Amateur player is automatically re-classified as Professional when the player has accepted cash while competing in a Professional division. Accepting prizes in lieu of cash payout or accepting money for winning an ancillary contest such as an ace pool, top-of-the-card round prize, or CTP contest does not cause a player to relinquish his or her amateur status.
Is it the case that if you are registered as an am and accept cash in a pro division at a PDGA tourney you are a pro from that point forward regardless of rating?