Vlan Trunk Over VPN

I have lant to migrate all of virtual machine to new server in different location, and we need to keep same ip address.

The vlan handled by core switch and the core switch connected to the fortinet, in new location i also have same devices and both location have internet connection.

Since the migration will done partially, this need both location should have same ip address, same vlan and can communicate each other.

So can we use VPN in fortinet to transfer Vlan ? In my mind if we can transfer vlan over VPN then the new location will have same vlan and each host on new location can communicate with devices in of location.

IF migration is done for all virtual machine then i can shutdown vlan interface on old location and make new interface vlan on core switch in new location.