Yea, I have had this go sideways. and LOL, Cisco TO Cisco does not migrate (like v 7 -> 9 firmware). Besides the - there are certain things Cisco DOES NOT DO that other firewalls will do.
BASICALLY - Cisco wants each service to have it's own IP address. If you only have 1 IP and lots of different services - GL. My issue was the FTP server. Cisco wants you to have a different IP for that. It could do what the old one did, but it was an undocumented feature and I had to call support to get it going. This was going to a Cisco FW AP, not Meraki. The Meraki is more simplified / more streamlined and has less features. Not to say you need these features