Yes. Some people are returned. Some of those are brought back again.

And when several people are brought from the same universe at different times, no one has ever noticed a disappearance. My friends Jubilation and Michael are here from my future, and Teddy Altman is from our world from their future, and there's no indication that we were gone for any time in our home world.

It's not that there's no way home, it's that we're totally helpless as to whether or not we return.