I have been searching the Tool(freeware) for a clean solution on how to migrate tasks from JIRA to TFS2012.
Already i try to setup tfs-jira-synchronizer setup
I've been trying to set this up on a sandbox server however when I ran the installer I didn't get the acl application file in my virtual directory.
The installer completed without errors.
Try the integration platform.
http://tfsintegration.codeplex.com/
It's buggy, hard to work with, and usually really annoying but it is your best bet.
I recently had to migrate from Jira to TFS.
I ended up writing my own utility to do so. I felt this was a good candidate for 'open-sourcing' so have published it on GitHub here:
https://github.com/KilskyreMan/JiraToTfs/releases
(tested against TFS Server 2012, 2013 and 2015)
Utility handles all main and custom templates, links and attachments.
Documentation can be found here: https://github.com/KilskyreMan/JiraToTfs/wiki
Hopefully this can be of use to other people in this situation.
Cheers - Ian.
There is also this: https://marketplace.atlassian.com/plugins/com.spartez.jira.plugins.bork.tfs4jira
for synchronizing the two systems
If you want a one-time migration of data, I don't know of a free tool for that. I'd probably start with looking at the data formats that TFS will accept, then write a tool that parses an XML backup from JIRA to create a file in a suitable format for import. You could even use the JIRA REST API to get the data but that might be slower depending on how much data you want to export from JIRA
Disclosure: at ServiceRocket we do many data migrations into JIRA each year.