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+### Please describe the problem.
+If `git annex fsck --from web` encounters a URL that is no longer available,
+it will remove all URLs from the appropriate file's location log.
+Surprisingly, adding one of the URLs the file was associated to before brings back all of them.
+
+### What steps will reproduce the problem?
+
+    $ git annex whereis file.txt
+    whereis file.txt (3 copies) 
+  	    ...
+
+      The following untrusted locations may also have copies:
+  	    00000000-0000-0000-0000-000000000001 -- web
+
+      web: http://example.org/dead/file.txt
+      web: http://example.org/alive/file.txt
+    ok
+    $ git annex fsck --from web
+    fsck file.txt (checking http://example.org/dead/file.txt...) (fixing location log)
+      ** Based on the location log, file.txt
+      ** was expected to be present, but its content is missing.
+    failed
+    (recording state in git...)
+    git-annex: fsck: 1 failed
+    $ git annex whereis file.txt
+    whereis file.txt (3 copies) 
+  	    ...
+    ok
+    $ git annex addurl http://example.org/alive/file.txt
+    addurl file.txt ok
+    (recording state in git...)
+    $ git annex whereis file.txt
+    whereis file.txt (3 copies) 
+  	    ...
+
+      The following untrusted locations may also have copies:
+  	    00000000-0000-0000-0000-000000000001 -- web
+
+      web: http://example.org/dead/file.txt
+      web: http://example.org/alive/file.txt
+    ok
+    
+
+The only fix that seems to fix this is using `rmurl` on the dead one.
+
+### What version of git-annex are you using? On what operating system?
+    $ git annex version
+    git-annex version: 6.20171026
+    build flags: Assistant Webapp Pairing S3(multipartupload)(storageclasses) WebDAV Inotify DBus DesktopNotify ConcurrentOutput TorrentParser MagicMime Feeds Quvi
+    dependency versions: aws-0.16 bloomfilter-2.0.1.0 cryptonite-0.23 DAV-1.3.1 feed-0.3.12.0 ghc-8.0.2 http-client-0.5.7.0 persistent-sqlite-2.6.3 torrent-10000.1.1 uuid-1.3.13 yesod-1.4.5
+    key/value backends: SHA256E SHA256 SHA512E SHA512 SHA224E SHA224 SHA384E SHA384 SHA3_256E SHA3_256 SHA3_512E SHA3_512 SHA3_224E SHA3_224 SHA3_384E SHA3_384 SKEIN256E SKEIN256 SKEIN512E SKEIN512 SHA1E SHA1 MD5E MD5 WORM URL
+    remote types: git gcrypt p2p S3 bup directory rsync web bittorrent webdav tahoe glacier ddar hook external
+    local repository version: 5
+    supported repository versions: 3 5 6
+    upgrade supported from repository versions: 0 1 2 3 4 5
+    operating system: linux x86_64
+
+I'm running NixOS btw.
+
+### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)
+I'm lovin' it!
+