Different projections

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04-07-2021 08:25 AM
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fred7
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New Contributor III

Hello, in ArcGIS Pro I have two separate maps with default OpenStreetMap basemaps. The default coordinate system is WGS84. If I import a shapefile into one map the coordinates stay the same but the projection changes. How can I change it back to default?
Please look at the picture.
Thanks!
diff_proj.png

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Robert_LeClair
Esri Frequent Contributor

Fred - the default behavior of ArcGIS Pro is when you add a new map view. the coordinate system is WGS 1984 Web Mercator (Auxiliary Sphere).  The first operational layer you add to the Map View - in this case WGS 1984 - defines the Map View.  If you want to go back to Web Mercator, right click on the Map View and select Properties. In the Map Properties dialog, click Coordinate Systems, expand Layers and select WGS 1984 Web Mercator (auxillary sphere).  Click OK.   Voila!  Back to the way it was originally.

Related -  check in File Explorer to see if your shapefile has a projection file (*.prj).  If it's missing then you'll need to run the Define Projection GP tool to write the *.prj file.

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Robert_LeClair
Esri Frequent Contributor

Fred - the default behavior of ArcGIS Pro is when you add a new map view. the coordinate system is WGS 1984 Web Mercator (Auxiliary Sphere).  The first operational layer you add to the Map View - in this case WGS 1984 - defines the Map View.  If you want to go back to Web Mercator, right click on the Map View and select Properties. In the Map Properties dialog, click Coordinate Systems, expand Layers and select WGS 1984 Web Mercator (auxillary sphere).  Click OK.   Voila!  Back to the way it was originally.

Related -  check in File Explorer to see if your shapefile has a projection file (*.prj).  If it's missing then you'll need to run the Define Projection GP tool to write the *.prj file.

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fred7
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New Contributor III

Superb! Thank you!