I'm periodically getting data from an external partner that is bound to a very large fishnet (vector grid) in shapefile format. The fishnet itself sits at around 400~ megabytes, but the only data that ever changes is the tabular data in the database file.
So can you safely just swap the database file instead of redownloading the entire shapefile and shx-file every time you want to exchange data? Or are there circumstances where there might be changes to the index in the shapefile after saving the same geometry with new data?
It would of course be more practical to work with raster data for a fishnet this large anyway, but its sadly not an option in this case.