CAESAR II does not directly reference B31J or STP-PT-073. The program collects the B31J numbers from FEATools.
STP-PT-073 was the ASME research project behind the re-alignment of SIFs between B31 Code Books. That work was incorporated into the new B31J. This new B31J is still out for public review. Once public review ends (next week), ASME can elect to publish it or not publish it.