diff --git a/doc/bugs/sync_does_not_drop_local_content_present_in_exporttree_remote.mdwn b/doc/bugs/sync_does_not_drop_local_content_present_in_exporttree_remote.mdwn
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index 0000000000..21d491923d
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+++ b/doc/bugs/sync_does_not_drop_local_content_present_in_exporttree_remote.mdwn
@@ -0,0 +1,6 @@
+`git annex sync --content` does not drop local unwanted content that
+has been transferred to an exporttree remote.
+
+This normally doesn't matter since exporttree remotes are untrusted, but
+S3 with versioning enabled is not untrusted and once a file reaches such a
+remote it should be able to be dropped locally. --[[Joey]]