I have a private repository on github I would like to import to bitbucket. Importing the repository through your https://bitbucket.org/repo/import/github is impossible as it doesn't even list it as an existing repository and actually it's completely missing from the list along with quite a few others. I already have imported it using the https://bitbucket.org/repo/import which I had significant trouble with also. As a side note you may want to tell users that if they have their github account linked they do not need to use the authentication fields as that actually hinders the import.
On the https://bitbucket.org/repo/import/github it is listing a total of 30 repositories on my github account. When github is telling me I have 75.