Bandwidth stats with Watchguard

Hi
I'm current evalulating the product for monitoring a 3 Watchguard firewalls on seperate sites. All are configured for Syslog and are sending data to the management server.

I am only getting stats for web traffic though, BOVPN traffic isn't shown in the statistics. This is a big problem as we need stats for BOVPN tunnels to look at trends for improving WAN links.

As stated in the documentation all firewalls have been configured with logging enabled for External an VPN statistics (Setup..Logging Setup...Performance Statistics). However we only get traffic stats for web proxy traffic.

We are running Manageengine build 7001 on Server 2008 R2
Watchguard firewalls are running Fireware 10.0

Thanks
James