Moving Opnsense to new Proxmox host - VLAN's dropping with interface change

[ilium007]

I have Opnsense running virtualised on Proxmox (been running perfecting for over a year now). The reason I decided to virtualise was to allow seamless change across hardware if I ever had failures.

I decided to upgrade Proxmox host and now have a better machine with an Intel i350 NIC. Because the interface has changed from "em1" (old Proxmox NIC) to "igb1" (new Proxmox host) all the VLAN's dropped off because of the parent interface change. This means all firewall rules have gone etc.

I reconfigured the original VM and enabled "Prevent interface removal" and copied across to new Proxmox host but the VLAN interfaces still disappear.

I had hoped I could re-assign VLAN parent interface to each VLAN and retain my firewall rules etc.

[ilium007]

After restore in Proxmox I manually edited /conf/config.xml and changed all references to em1 with igb0 and it seems to be working. All VLAN's retained and firewall rules all working.

Not sure if this is the correct solution.