https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=37675 --- Comment #13 from Phil Ringnalda <phil@chetcolibrary.org> --- I was looking at whether the advanced editor would handle it better, but I got stuck on the fact that the basic editor is apparently not actually losing data, it's just mangling it. When it winds up with duplicate IDs, it then saves two or three 700 fields together in just one. That's invalid MARC, you can't have duplicate $a subfields, but the basic editor doesn't care if an existing record is invalid, it will still let you resave it. The advanced editor does care, so it's not possible to test how it behaves without someone unmangling all the fields that currently have duplicate subfields first. -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.