Question about reward bookings and flight cancellation

Managed to grab 2 x G reward seats out to SFO on the VS041 flight later this year
I have seen a thread here about this flight being cancelled a number of times, possibly due to light loads
If this happened to my flight and UC was full on the earlier flight would i be downgraded to a cabin with space or put on a Delta flight in the same cabin class the same day?
Thanks
I have seen a thread here about this flight being cancelled a number of times, possibly due to light loads
If this happened to my flight and UC was full on the earlier flight would i be downgraded to a cabin with space or put on a Delta flight in the same cabin class the same day?
Thanks