FAQ: Why can't ArcGIS 9.0 map documents be opened in ArcGIS 8.3?
Why can't ArcGIS 9.0 map documents be opened in ArcGIS 8.3?
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.
- Documents saved in 8.x with 'Same As Printer' setting change to the default printer or default page size when opened in 9.0