  In 2020 the Australia New Zealand Standard Research Classification Fields of
Research Codes (ANZSRC FoR codes) were updated by their owners. This has led
the sector to need to update their systems of reference and has caused
suppliers working in the research information sphere to need to update both
systems and data. This paper describes the approach developed by Digital
Science's Dimensions team to the creation of an improved machine learning
training set, and the mapping of that set from FoR 2008 codes to FoR 2020 codes
so that Dimensions classification approach for the ANZSRC codes could be
improved and updated.
