As per Shawn's advice I deleted the index data using http://localhost:8983/solr/Sitecore_SharePoint/update?stream.body=%3Cdelete%3E%3Cquery%3E*:*%3C/query%3E%3C/delete%3E&commit=true
and then stopped and started Solr and the duplicates were gone. Will keep a watch! Thanks much! -- View this message in context: http://lucene.472066.n3.nabble.com/Solr-5-4-1-Mergeindexes-duplicate-rows-tp4275153p4275869.html Sent from the Solr - User mailing list archive at Nabble.com.