Upgrading R12 from 12.1.1 to 12.1.3

 Hi,

I am trying to upgrade my current R12 from 12.1.1 to 12.1.3 and following the document 1080973.1 as master document to complete the process. The part in the document below is creating doubts for our environment.

"As the OracleAS 10g Patchset 10.1.2.3 for Forms and Reports for Oracle E-Business Suite Release 12 Document 437878.1 document is updated regularly, verify the latest copy of Document 437878.1 and apply all required patches that are mentioned in this document before upgrading to Oracle E-Business Suite Release 12.1.3"

Now while checking Doc 437878.1, I'm confused whether I need to apply the OAS 10.1.2.3 Patchset (5983622) with all interoperability patches, or just the additional patches? Since we are already on OAS 10.1.2.3 still do we need to apply the OAS patchset?