According to the compatibility matrix, zen 4 agents are compatible with
zen 7 server. We need to upgrade the server side on short notice, but are
unable to upgrade all the clients. Does anyone have any experience with
problems/issues on a zen4/zen7 mixed situation? The only service we're
using is the import service, inventory & imaging isn't used yet.

Netware 6.0 sp5/Zen 4ir6
WinXP sp2 client 4.90sp2