Hi. We are trying to stage some authority records to match existing authority records to overlay them. We have used the matching for bibliographic records successfully before but are having difficulty with matching authority records. The version of Koha is 3.20.01.000 and we are MARC21 using dom indexing and icu chains. Before getting into the details, can I ask if anyone has any experience of matching authorities (staging and managing) with any success? We are trying to match on the 010$a and looking at the matching rules documentation in: http://manual.koha-community.org/3.20/en/catadmin.html#recordmatchingrules Thanks in advance. Ian -- Ian Bays Director of Projects, PTFS Europe Limited Content Management and Library Solutions