Recently, we decided to migrate our projects from GitHub to BitBucket. For now, I tested with few projects as BitBucket has direct import feature. Everything is just fine, except GitHub issues, and wikis are not imported. Since most of the projects are still in development and some in production, issues, and wikis are important for us.
I did quick Google search and could not find proper solution.
Is there any solution?
Today we added proper issue import and export to Bitbucket. You can export an entire repo's issue tracker as a zip and then re-import on a different repo.
You can also create your own zips and so you could write very migration scripts to and from other issue trackers (e.g. GitHub).
Details: https://confluence.atlassian.com/display/BITBUCKET/Export+or+Import+Issue+Data
File format and data layout: https://confluence.atlassian.com/pages/viewpage.action?pageId=330796872