Some of the best deer hunting I have had has been over burned clear cuts. And yes, with the stumps still smoldering and smoking. The deer still seem to use it just like before, but the big difference is they are much easier to spot against a black background rather than blending in with the cover in the cutover. Post a stand up on the edge of the burn where you can see a large area and you will most likely be pleasantly surprised with how many you will see.
x2...I have seen them bed in the firebreak with stumps still smoking. They are curious about smoke and they react to fire just like they do to dogs, chainsaws, or any other disturbance. They don't flee into the next county, they just circle and come back to check things out.