Migrate firewall to New Panorama and IPSEC VPN Preshared key is not migrating over with the config

[JiaXiang]

I have migrate 4 firewalls from old panorama VM to new panorama VM and notice the preshared key for IPSEC is missing. My customer have lost their all IPSEC VPN preshared key is there any method I can migrate the firewall to new Panorama I can migrate with the Panorama.

We are following below guide to migrate the panorama 

https://docs.paloaltonetworks.com/panorama/10-1/panorama-admin/set-up-panorama/transition-to-a-diffe...

[JiaXiang · Accepted solution]

I have raise it to PANW TAC to check. It is the a issue about masterkey and no other selection only can factory reset. After factory reset the firewall and link back to Panorama then the issue is resolve.