CARP 18.7.10_4 <-> 19.1.6 problem

[c-mu]

Hi,
are the known issues regarding CARP between 18.7 and 19.1?
I upgraded my backup FW to 19.1.6 and having troubles with syncing the config from Master (18.7) to Backup.

Everytime I do a change at the master, my backup server looses the firewall config of my sync interface und I get the notice "Interface specified for the virtual IP address 10.27.20.200 does not exist. Skipping this VIP."

Then I have to add a new FW rule to accecpt traffic on that interface and have to save the CARP config again, without any changes - simply open the carp config on the backup server na press save.