https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=18651 --- Comment #33 from Jonathan Druart <jonathan.druart@bugs.koha-community.org> --- Created attachment 64397 --> https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=64397&action=edit Bug 18651: Copy the row before modify the id If the "max(issue_id) from old_issue + 1" already exists in issues, the move fails. For instance we have 1, 2, 3, 4 in issues checkin 4 1, 2, 3 in issues (AI=5) 4 in old_issues Restart mysql => AI is reset to MAX(issue_id) => 4 checkout a new one 1, 2, 3, 4 in issues (AI=5) 4 in old_issues checkin 4 (will get id 5 in old_issues) 1, 2, 3 in issues (AI=5) 4, 5 in old_issues => This works with and without this patch Now we have 1, 2, 3 in issues (AI=5) 4, 5 in old_issues Restart mysql => AI is reset to MAX(issue_id) => 4 checkout 2 new ones 1, 2, 3, 4, 5 in issues (AI=7) 4, 5 in old_issues checkin 4 (4 becomes 6 in old_issues) 1, 2, 3, 5 in issues (AI=6) 4, 5, 6 in old_issues => This did not work without with patch The update of the issue_id was made before the move (so in the issues table), the PK did not allow it Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz> -- You are receiving this mail because: You are watching all bug changes.