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Description of problem:
Nowadays preupgrade-assistant generates a kickstart with the help of contents. 
Unfortunately on command line is mentioned only a path to kickstart file without information whether kickstart is prepared for RHEL 7 installation directly.

Report from `preupg` should be enhanced so that sections like users, repositories, packages and partitioning has to be properly updated before any RHEL-7 installation.
Also information that kickstart is only a draft and can not or should not be used directly for RHEL-7 installation before any modification.

Also hint for subscription manager should be mentioned in an output.

Kickstart log file should have a reference what to do after a RHEL-7 installation. This is not handled yet.

This bugzila should covered all these issues.

NOTE: Text has to be reviewed by documentation team. Admins and users will modify kickstart file and misunderstanding can cause a lot of problems in future.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHEA-2015-2497.html