When importing from FogBugz Version 7.3.15 (DB 745, Build 2407) to JIRA 6.4.10, there seems to be no way to get the Release Notes from FogBugz-cases. I even tried to create a custom field in JIRA first, and then map it during the import process, but no success so far. Release Notes are simply missing after importing, not even attached as comment to the JIRA-issue.
How can I get the Release Notes to my JIRA-issues?