Migrating existing clients to Red Hat Satellite 6

Hello all,

I am trying to migrate my existing RedHat Servers from Classic to Satellite.
I was able to get the Satellite server up and running and subscriptions attached etc.

However I am following this Red Hat Article https://access.redhat.com/solutions/1233443 to do the migration, however it is failing.

When I run the command 'rhn-migrate-classic-to-rhsm' I get this error message as follows:
'Could not read legacy system id at /etc/sysconfig/rhn/systemid'

I am using Satellite 6.2. When I navigate to /etc/sysconfig/rhn there is no file called systemid. I searched the entire hard disk and no file by that name.

Could anyone shed some light on this as to what is going wrong please.
any help would be greatly appreciated.

Regards,

Patrick