The VMware interoperability matrixes shows what is supported, but some solutions may works even if this is not listed on matrixes, but remember that if you get a problem, VMware may will not help you until you place your entire environment in a full supported configuration.
I strictly recommend you upgrade your vCloud Director, for two reasons:
1. your upgrade sequence is totally wrong, based on KB article 2057795, you should first upgrade the vCD before upgrade the vCenter;
2. keep your environment in a full supported configuration to avoid problems.
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Richardson Porto
Senior Infrastructure Specialist
LinkedIn: http://linkedin.com/in/richardsonporto