Does Aviatrix Transit Orchestrator able to Integrates existing AWS TGW

Hello Dear Experts

I'm trying to attach an already existing AWS TGW to Aviatrix Controler.  Is that supported ?

From my lab,  it seems that whenever the AWS TGW is deployed directly through Aviatrix,  then the avaitrix controller is able to manage the AWS TGW and its related attachments, 

But whenever the TGW is already existing, even if you try to create an AWS TGW using the existing one ASN and Name. It seems that New AWS TGW will be deployed with a name as Aviatrix-{$Name} is recreated instead of discovering and populating existing one.

Can someone confirm my understanding or disagree?