I have seen bears in the spring ,be in the same area as fall.
But.........
I agree food sources are the key.
Thats all bears care about is food.
Depending on fall hunting pressure ,alot of the big ones go nocturnal come fall.
Just think of the steepest,deepest,nasty thick,place that doesn't have much hunting pressure.
Thats where the big one's are.
There's an old saying about bear hunting.
Where the road ends ,is where the hunt begins.