This command "create export policy" for scheme cm_storage has this limitation in WFA2.1RC1. It doesn't have reservation and congruence scripts. So this is expected behavior with this command in this WFA version.
I'll file a bug to get track this issue and perhaps it will be fixed in future releases. If you too want to track it, you can raise a case with NGS.
Your inconvenience it regretted.
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