(meta question: JIM is now shipped with JIRA, so I presume I should file bugs about it here?)

If I check the Import Time Tracking information option for a Pivotal Tracker import, I get the following errors:

2011-05-05 19:19:04,420 ERROR - Error downloading time tracking information from Pivotal Tracker: expected text/csv content type; got text/html; charset=utf-8
2011-05-05 19:19:04,420 ERROR - Time tracking is disabled by default in Pivotal Tracker, there may be no data to import.

This options is not documented yet at http://confluence.atlassian.com/display/JIRA/Importing+Data+From+Pivotal+Tracker so maybe I shouldn't expect it to work yet?