diff --git a/doc/forum/switching_backends/comment_4_e1d4a48baac23fd3f67b20eba4eee8af._comment b/doc/forum/switching_backends/comment_4_e1d4a48baac23fd3f67b20eba4eee8af._comment
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+[[!comment format=mdwn
+ username="http://joeyh.name/"
+ ip="4.154.3.125"
+ subject="comment 4"
+ date="2013-02-05T19:16:48Z"
+ content="""
+If you have not yet run `git annex sync` on the remotes, then they are still referring to the old unmigrated keys, which is why `unused` will not remove them.
+"""]]