In the 1960's Peter J Scott and colleagues at the now National Archives of Australia developed a new way of documenting records known as the Australian 'Series' System. Adopted by public records institutions in Australia and New Zealand, and selectively around the world, this approach forms the basis of the National Archives Commonwealth Record Series (CRS) system. In 2018 following views expressed that digital records pose a serious challenge to traditional ways of contextualization it was decided to review the CRS system in this respect. This paper looks at the process of that review and the eventual development of an enhanced model merging concepts from PREMIS with the CRS to enable a more flexible approach of documenting records in all forms.