We have recently joined with another company, and we're trying to add our project information from an instance of JIRA 4.1.2 #531 (running on Windows Server 2008) to JIRA 4.4 (running on Linux). I have a duplicate of the 4.4 running, and am trying to import the 4.1 XML file to create a new version of our database, but I cannot get past the file selection on the import screen due to the older file. What steps do I need to follow outside of regular import or backup procedures to manage this? All the documentation I have gone through appears to be for either a server change or an upgrade from scratch, but not for a migration of an older version of JIRA on one OS to a newer existing version (with different projects) on another.