There are several oacore service in source instance,after clone,why only one oacore serveice?

As suggested by SR, We have followd exact steps of Doc ID 2157661.1 for DB Tier migration and exact steps of Doc ID 2048954.1 for Apps tier Migration. Now our database and application is up and running.

I can see that in my source application, there are 2 oacore servers(oacore_server1 and oacore_server2) and 2 forms server(forms_server1 and forms_server2) running, But after migration i can see that in my target application there is only one oacore server(oacore_server1) and one form server(forms_server1) running. Can you please let me know why only one oacore and form server get migrated and what is the way of adding both the servers.