forwarding virtual server not forwarding traffic for one traffic-group

ltm snat snat-outbound-traffic {
    description snat-outbound-traffic
    mirror enabled
    origins {
        10.109.0.0/25 { }
    }
    translation /Common/10.109.16.1
    vlans {
        traffic-group1-vlan100
    }
    vlans-enabled
}
ltm snat-translation 10.109.16.1 {
    address 10.109.16.1
    inherited-traffic-group true
    traffic-group traffic-group-1
}
ltm virtual forwarding-virtual-server {
    description forwarding-virtual-server
    destination 0.0.0.0:any
    ip-forward
    mask any
    profiles {
        fastL4 { }
    }
    source 0.0.0.0/0
    translate-address disabled
    translate-port disabled
    vs-index 8

Ok fixed, issue was a global snat rule which i didn't know existed, once deleted the FVS started to forward for TG1.

thanks for the assistance, there's always a reason why!!