Migrate ADVPN hub to new hardware

[volkerdose]

Hello everyone,

I have a question to which I was not able to find an answer yet.

We have a SDWAN/ADVPN setup with one hub (vdom on a 400E) and about 80 spokes. 

For the hub we want to buy a new 200G, mainly because of the 10GB interfaces.

I have found a couple of articles here about migrating a Fortigate to a new model and this article (346859) points out, that i have to add the new 200G to Fortimanager with the help of Forticonverter.

Our SDWAN/ADVPN setup is a couple of years old (we started with 6.4) and I wonder if there is way to migrate the hub without breaking all the scripts. 

Under VPN Manager -> IPSec VPN communities we have ADVPN-1, ADVPN-2 and ADVPN-3. Every ADVPN has  the same Fortigate with the "Hub"-role - and this is bound to the serial of the device. 

I would like to replace this object with the new 200G....

Is there a document around, that shows how to do this?

Or do I need to create all the SDWAN/ADVPN stuff from scratch?

Best regards

Volker