The answer is always “it depends”. My scouting/observations in MT in August was everything I saw was lower. Once I got above 6000ft all but the major creeks were dry, but I saw elk along river bottoms. Why? Food and or water probably. I don’t know and don’t care. That is just where I saw them. It is a small sample and I’m sure there were still elk up high. I heard in Randy’s mid season podcast that they noticed them lower too. Observations can vary. Don’t get stuck trying to make a plan work if the elk don’t fit the plan.