diff --git a/doc/bugs/sync_content_copies_unwanted_removed_files.mdwn b/doc/bugs/sync_content_copies_unwanted_removed_files.mdwn
new file mode 100644
index 0000000000..f2dd9a9924
--- /dev/null
+++ b/doc/bugs/sync_content_copies_unwanted_removed_files.mdwn
@@ -0,0 +1,5 @@
+A couple of times I have seen a git-annex sync -C . upload files to the
+remote that are not part of the remote's preferred content. In the most
+recent case, I had moved the file to another directory while the sync was
+downloading a previous file. I suspect that the file being removed causes
+preferred content checks to mess up. --[[Joey]]