Warning are shown due to Policy Compile Behavior Changes in 7.x , Same VMP policy would not show any warnings in 6.7.x version.
SGOS Release : 7.3.x
Known issue when VPM policy rule(s) contain IP addresses in a category definition.
The issue due to "IP addresses in a category" is fixed in version SGOS 220.127.116.11.
However if a policy layer contains rules with identical conditions, installing policy will still results in the message for the subsequent rule(s): "Warning: Unreachable rule, conditions will be matched by a preceding rule".
We need to make sure that rule conditions are unique, so that policy coverage does not record duplicate statistics.