Should a scanned map in a GIS project maintaining historical accuracy be georeferenced again?

Georeferencing a scanned map in a GIS project that is intended to maintain historical accuracy is essential to ensure that the scanned map aligns correctly with current spatial data. Historical maps, by their nature, may not conform to modern coordinate systems, and their features could shift over time due to various factors such as land use changes or natural processes. By georeferencing the scanned map, the user can correctly position its historical features in relation to current data layers. This process enhances the map’s usability, allowing for better analysis, comparison, and integration with contemporary datasets.

In situations where historical context is important, accurate georeferencing serves to reveal how landscapes have evolved, offering valuable insights into spatial changes over time. Simply accepting the scanned map as already accurate may overlook the necessary adjustments required for proper integration within the GIS project, making georeferencing a crucial step for maintaining both accuracy and relevance.