Iquesry is not working between LTM and GTM

pair of GTM and LTM in three DCs. GTMs are in Active standalone and ltms are in active standby mode

 

topology

 

GTM to switch vlan (10 ) LTM to switch (VLAN 10 ,20,30)

 

VLAN 10 is listner in GTM,self ip in LTM and l3 interface in sw VLAN 20 is self IP in LTM and l3 interface in sw

 

In GTM GSLB server list added GTM and LTM ( from vlan 20 IP )

 

LTM DG is VLAN 30 (sw IP) GTM DG is vlan 10 (LTM IP)

 

Forwarding VS is configured for VLAN 20 IP in LTM to forward the traffic whic is coming on VLAN 20

 

Problem

 

I am not able to add all the GTM and LTM through Iquery when LTM is DG for GTM when i changed GTM GW as SW VLAN 10 IP then all the servers in GTM shows green

 

Also notice that after configuring the forwarding VS in DC for VLAN 20 IP which is used in GTM to add LTM

 

local LTM server are showing green in local DC GTM but not the other DCs LTM and GTM showing green

 

Please help