Hi, I'm trying to match and overlay a couple of thousand bibs. I have already loaded approx 9,000 bibs on the koha database. All have ISBNs. But when I try to match and overlay with better records, the incoming records have the same ISBN but with (pbk) appended after the ISBN in the 020 $a - e.g. a190446730X (pbk). This is valid in Marc21. But koha refuses to match on any of these incoming records. I could strip out the (pbk) but that will not fix the problem for new bibs in the future. Any ideas? Thanks, Marty McGovern This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. It is possible for data transmitted by email to be deliberately or accidentally corrupted or intercepted. For this reason, where the communication is by email, Interleaf Technology does not accept any responsibility for any breach of confidence which may arise through the use of this medium. This footnote also confirms that this email message has been swept for the presence of known computer viruses.