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You may use the 12c version of any course that is on the 11g OCM approved courses list to fulfill the training requirement. The statement that you mention above means that you cannot use the same course to fulfill OCM training requirements that you used to fulfill OCP training requirements.
If you've completed RAC 9i and RAC 12c, you can use the 12c version, but you cannot use the 9i version. You can use a training version that is later than the certification version you are pursuing, but not an earlier version of training.
I hope this clears things up a bit for you.
Oracle Certification Program