How to open a ERDAS 7.5 GIS Raster

[GabrielleSakolsky]

I have 8 Raster files with the .GIS extension. In my research, I found that it is a ERDAS 7.5 GIS type. How do I open this file in ArcMap or ArcGIS Pro?

[DanPatterson_Retired]

Raster file formats—ArcGIS Pro | ArcGIS Desktop 

erdas *.gis is a supported raster type using the Spatial Analyst Extension... do you have it?

[GabrielleSakolsky]

Yes. In Spatial Analyst what tool should I use? Can this file open in ArcGIS Pro? I tried using the Raster to other Format but that causes an error. Thanks!

[DanPatterson_Retired]

have you tried just using the Add data tool from the ribbon when a Map is active?

If it doesn't read it natively, then you will have to provide the error message, I don't have any *.gis files to test

[GabrielleSakolsky]

I just gave the Raster export another try and the tool ran without error but the file did not save in the folder indicated. I tired converting to a TIFF and also tried IMAGE but neither output save in the workspace.