LTM working with Celstix devices

We have an LTM HA pair with 5 Vlans. 1- Internal 2- External 3,4 - Proxy 5 - DMZ

There are 2 Celestix devices connected to the DMZ Vlan. They are in an LB array. They have 3 IPs one of them is virtual. These 3 IPs share the same mac address.

We have a VS with IP forwarding. This VS controls the internal, external and the DMZ traffic. We couldn't pass traffic between the Celestix devices with the users in the internal side.

We have other devices in the DMZ Vlan that have no problems with the traffic between the DMZ & Internal Vlans.

any idea about to have the connectity between the Celestix devices with the users in the internal side and viceversa?