Minimum downtime for ASA migration

[RahmaSallm]

We need to migrate our production ASA from the current Platform mode to Appliance mode. The ASA are setup in a HA configuration. I can't find any documentation about how this migration can be done in HA mode. Only standalone:

https://www.firewall.cx/cisco/cisco-firewalls/cisco-firepower-conversion-from-platform-to-appliance-mode.html

Also, how can we do this with ZERO downtime?

[MHM Cisco World]

https://video.cisco.com/detail/videos/asa/video/6354236546112

Check this video from cisco it good 

MHM