Just want to double check. Reserve pilot picks up a GS/IA.1 leg there, overnight, 1 leg back. Gets to the airplane, flight cancels. Company calls a couple minutes later, reroutes them onto something else in the same 2 day footprint, just gets back a few hours later than the original.

This is kosher, right? Technically the pilot isnt required the answer the phone or acknowledge the reroute, but they aren't automatically released when the first flight cancels, so are still on an FDP, so 117 legal and contractually legal to accept the reroute since they are a reserve pilot?