Hi,
I have not used CPSM version 3 but I have done a lot of work with 2.3.
I found that that I had to spend a lot of time making sure that the network topology was correct in order for the correct rules to be generated. There were a few strange issues that I had with rules not being generated and most of the time I just had to play around with the topology until I had it right.
With your config do you get any errors/warnings when you do a save and update ? I found this fairly helpful.
While CSPM is a good product for managing multiple firewalls I find its adds too much management overhead to be valuable is a single firewall environment. Just my opinion
Regards Brett