Direct answer
Participation, injury exceptions and parlay recalculation are separate rules. A leg may stand once the player participates, may qualify for a defined exception, or may be void. The combined bet may then follow a separate same-game rule.
What to check
Record whether the player appeared, whether the selection was already determined, and whether you placed a live or pregame bet. A promotion credit is not automatically a resettlement of the original wager.