Another possibility would be improving MEMBER logging: Bug 15296 - MEMBER logging in action_logs does not give enough detail. https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=15296 That would allow you to see when any borrower information changed, including cardnumber. On Thu, Jun 16, 2016 at 2:42 PM, Owen Leonard <oleonard@myacpl.org> wrote:
When we issue a replacement card the patron gets a new library card number. Sometimes we realize a day or two later that we have to merge their old and new card numbers in Overdrive
There was a patch which would have allowed for tracking previous card numbers, but it was abandoned by the original developers.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=3469
It's possible there is something there worth resurrecting. It's certainly a feature we could use, for much the same reason.
-- Owen
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