Actually the syntax is the same...
If you can test try this example:
mgmt_cli -r true add host name "host_1" ipv4-address "10.10.10.10"
mgmt_cli -r true add network name "net_1" subnet "10.10.10.0" mask-length "29"
lol.csv
layer,name,position,comments,source.1,source.2,destination.1,destination.2,service.1,service.2,action,track
Test Security,"Rule1","1","TEST1","host_1","net_1","net_1","host_1","http","https","Accept","Log"
Test Security,"Rule2","2","TEST2","host_1","net_1","net_1","host_1","http",,"Accept","Log"
Test Security,"Rule3","3","TEST3","host_1","net_1","net_1","host_1","http","https","Accept","Log"
Test Security,"Rule4","4","TEST3","","net_1","net_1","host_1","http","https","Accept","Log"
Test Security,"Rule0","1","TEST0","net_1",,"net_1","host_1","http","https","Accept","Log"
Replace Test Security with your access-layer