Dr. Anya Sharma, the lead archivist at the National Heritage Repository (NHR), is tasked with enhancing the digital preservation strategy for a vast collection of digitized historical manuscripts. The collection, currently stored using a proprietary file format, faces increasing risks of obsolescence due to the software vendor discontinuing support. Dr. Sharma\'s team is considering various preservation actions, including format migration, emulation, and refreshing. However, the NHR\'s budget is limited, and the team lacks expertise in all preservation techniques. Furthermore, a recent audit revealed inconsistencies in the descriptive metadata associated with some manuscripts, potentially hindering future access. Considering the OAIS framework\'s emphasis on proactive and risk-based preservation planning, which of the following approaches would be MOST effective for Dr. Sharma to adopt in the short-term to ensure the long-term accessibility and usability of the digitized manuscripts, given the constraints?