gateway cluster member is missing under gateway cluster object

[cciesec2006]

I have an issue that need urgent advice.

I have a Provider-1 NG with AI R55 with HFA_17 running on
Solaris 9. Two Provider-1 Managers and two Provider-1
containers. The P-1 managers are primary and secondary
but the containers are not H/A. Let call them
M1, M2, C1 and C2.

I have a CMA inside C1. This CMA manages about 8 pairs
of firewall clusters and 8 single firewalls. All
enforcement modules are Secureplatform NG with AI
R55 w/ HFA_17. There is a gateway cluster called
ibmfw and that this gateway cluster object has
ibmfw1 and ibmfw2 as cluster members

When I open the Provider-1 Multi-Domain GUI, NOT
SmartDashboard, when I expand this gateway cluster,
the ibmfw2 gateway cluster member is missing
underneath the ibmfw gateway cluster object.

Anyone know what it is and how I can fix this?
Upgrading to HFA_20 is NOT an option.

Thanks.