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FAQ: Why can't ArcGIS 9.0 map documents be opened in ArcGIS 8.3?

Question

Why can't ArcGIS 9.0 map documents be opened in ArcGIS 8.3?

Answer

After uninstalling ArcGIS 9.0 and reinstalling ArcGIS 8.3, MXD map documents created in ArcGIS 9.0 do not open under ArcGIS 8.3.

ArcGIS 9.0 is not backwards compatible with previous releases.

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