Upgrading from D5 to D6 should work. From the sound of your ticket you might want the Node import module: http://drupal.org/project/node_import as importing users+cases (and in reality, importing in general) really isn't inside the scope of Case Tracker.
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nvahalik commentedUpgrading from D5 to D6 should work. From the sound of your ticket you might want the Node import module: http://drupal.org/project/node_import as importing users+cases (and in reality, importing in general) really isn't inside the scope of Case Tracker.