Last modified: 2014-11-07 11:40:28 UTC
Repro: 1. Create Item A https://test.wikidata.org/wiki/Q242 and Item B https://test.wikidata.org/wiki/Q241 2. Add enwiki=>2 on Item A 3. Remove enwiki=>2 on Item A 4. Add enwiki=>2 on Item B 5. Restore Item A to the revision with enwiki=>2 5a. Or undo the revision removing enwiki=>2 6. It says "Site link <a class="external text" href="//en.wikipedia.org/wiki/2">2</a> is already included in another item, <a href="/wiki/Q241" title="Q241">Q241</a>."