Replicating GTM Configurations between HA

Hi,

I have a pair of BIG-IP devices running in a HA cluster. I can see the configurations are getting replicated between the LTMs.

Today I have turned on the GTM facility in both the devices. I configured the active LTM with DNS(GTM) a few basic configs. But I don't see that configurations getting replicated to other peer BIG-IP device. Is this expected and how it works?