What is the easiest method to migrate FTD policies from one FMC then apply those policies to another FTD on the new FMC
I follow below steps :
1. create test vFMC same version of what you have FMC
2. Export the ACP, and Import to Test vFMC - check all imported and no errors.
3. Upgrade to test FMC to new version, check all ACP no intact.
4. Export to ACP
5. Import on the new FMC you looking to deploy as new with same version, (make sure FMC higher version and FTD also latest version for the ACP to work)
6. on the new FMC and FTD create static routes, and VPN (is the best method to review if anything not needed you can cleanup)
7. If this is different IP both can be in the Live network, when you get maintenance window, change the route to new FTD and test.