If the current user is forbidden to view a secured Quick Selector page, the application will show a forbidden page with close button on the upper right corner. To do this, Iron Speed Designer needs to replace Forbidden page during migration.
During migration, Forbidden.aspx and Forbidden.aspx.vb(cs) are replaced.
After migration, re-apply any customizations you may have made to the original files.
Version 10.0.0 Application Migration