Currently we have a mix of ZEN3.2 and 4 and want to go to 7. Are there any
caveats in doing so? With the machines that do not have the 4 or 7 agent on
them, I can just run NAL from the Public drive, correct? When I extend the
schema and install the license, I can install ZEN 7 anywhere in my tree I
want, and upgrade older ZEN versions as I go. Are there any caveats in
doing this?

Thanks.