No, it doesn't.
A Broadway Production Contract is a Broadway Production Contract. The length of the run does not matter. If a show wants to extend, then there are new contract negotiations and new opportunities for the agents to get more for their clients, but that's irrelevant. Contracts only specify minimum terms, and those don't change because a show extends.
Nonprofits have a different contract, so if this transfers as a Public Theater production (like a Roundabout or a Lincoln Center production) then they would be under a LORT contract and have cheaper terms. But again, the length of the run does not matter.
ANYTHING GOES has the same contract type and, therefore, the same minimum terms, as HARVEY, even though AG was an open run. THE BOOK OF MORMON has the same contract type as THE BEST MAN.
Nothing matters but knowing nothing matters. ~ Wicked
Everything in life is only for now. ~ Avenue Q
There is no future, there is no past. I live this moment as my last. ~ Rent
"He's a tramp, but I love him."