If you have looked in a folder that contains data, boundary files, or grid files created by MapViewer, you may have noticed files with a .GSR2 extension in the folder. These Golden Software Reference files are created when you save a projected file from MapViewer.
The Golden Software Reference files contain the projection settings used to project the data in MapViewer. Projection, datum, and georeference information are stored in the .GSR2 file. When you create a map from data that has an associated .GSR2 file into MapViewer, the projection information is used when displaying the map. If the Golden Software Reference file is deleted, the boundary can be imported but it will not be projected properly.
MapViewer .GSM file format retains all of the information in a map, including projection information.
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