I found out the solution! I needed to also add an EdgeNGramFilterFactory to the fields that are the source of the copyField. That got the highlighting working again.
-- View this message in context: http://lucene.472066.n3.nabble.com/Highlighting-with-a-default-copy-field-with-EdgeNGramFilterFactory-tp3510374p3516166.html Sent from the Solr - User mailing list archive at Nabble.com.