Both Jira instances are running 6.1#6144, but when I attempt to import a project I receive the following error
This data appears to be from an older version of JIRA. Please upgrade the data and try again. The current version of JIRA is at build number '6144', but the supplied backup file was for build number '6106'.
i've looked in the xml file and it even says that the Build is 6.1#6144