On bug 14783 a bug was introduced on the db_rev, that cleared all sysprefs. I rewinded ~500 commits in an attempt to reproduce it, following this steps: $ git reset --hard 1a1529d20572c8eb7e65ad7bbd41f688d5f86f07 $ reset_all $ git reset --hard ae986b992dfc2299ec58f4d1c0079fbac1ec4a03 $ updatedatabase the result is: root@kohadevbox:koha(master)$ updatedatabase C4::Installer::SetVersion(): DBI Exception: DBD::mysql::st execute failed: Duplicate entry 'Version' for key 'PRIMARY' at /kohadevbox/koha/C4/Installer.pm line 777 If I do this: $ git reset --hard 1a1529d20572c8eb7e65ad7bbd41f688d5f86f07 $ reset_all $ git reset --hard ab1e0a5d6ad2eb31e4322ec11a1e971386144f5d $ updatedatabase the result is: root@kohadevbox:koha((1a1529d2057...))$ updatedatabase Upgrade to 22.06.00.045 [12:04:08]: Bug 29144 - Copy and remove branches.opac_info Upgrade to 22.06.00.046 [12:04:08]: Bug 15348 - Add new column aqorders.estimated_delivery_date Upgrade to 22.06.00.047 [12:04:08]: Bug 30025 - Split and rename BiblioAddsAuthorities system preference Added RequireChoosingExistingAuthority and AutoLinkBiblios BiblioAddsAuthorities removed Upgrade to 22.06.00.048 [12:04:08]: Bug 30472 - borrower_relationships.guarantor_id NOT NULL Upgrade to 22.06.00.049 [12:04:08]: Bug 30490 - Adjust FK constraint for parent item type Upgrade to 22.06.00.050 [12:04:08]: Bug 30497 - Recreate old_reserves_ibfk_4 if cascading Upgrade to 22.06.00.051 [12:04:08]: Bug 7021 - Add patron category to the statistics table Upgrade to 22.06.00.052 [12:04:08]: Bug 25735 - Add Elasticsearch field 'available' Upgrade to 22.06.00.053 [12:04:08]: Bug 30484 - Add a notice template for ILL Update notices Bug 30484 DB update complete Upgrade to 22.06.00.054 [12:04:08]: Bug 23538 - Add new system preferences EmailPatronRegistrations and EmailAddressForPatronRegistrations and new OPAC_REG letter Upgrade to 22.06.00.055 [12:04:08]: Bug 26368 - Add OCLC Encoding Levels system preference Added UseOCLCEncodingLevels system preference Upgrade to 22.06.00.056 [12:04:08]: Bug 30571 - Table z3950servers: three cols NOT NULL Upgrade to 22.06.00.057 [12:04:08]: Bug 29071 - Set HoldsQueueSplitNumbering where not set Added HoldsSplitQueueNumbering if not already there Upgrade to 22.06.00.058 [12:04:08]: Bug 30944 - Replace branchtransfers.cancellation_reason CancelRecall with RecallCancellation Upgrade to 22.06.00.059 [12:04:08]: Bug 25936 - A password change notification feature Upgrade to 22.06.00.060 [12:04:08]: Bug 10950 - Add pronouns to borrowers table Added pronouns column to borrowers table Added pronouns column to deletedborrowers table Added pronouns column to borrower_modifications table Upgrade to 22.06.00.061 [12:04:08]: Bug 31333 - Add new suggestionPatronCategoryExceptions system preference Upgrade to 22.06.00.062 [12:04:08]: Bug 27136 - Add missing languages: Cree, Afrikaans and Multiple languages, Undetermined and No linguistic content Added missing languages Upgrade to 22.06.00.063 [12:04:08]: Bug 31569 - Add primary key for import_biblios Added primary key to import_biblios table Upgrade to 22.06.00.064 [12:04:08]: Bug 14783 - Allow patrons to change pickup location for non-waiting holds Added new system preference 'OPACAllowUserToChangeBranch' Removed system preference 'OPACInTransitHoldPickupLocationChange' As the 'failing' db_rev is the last one, I would've expected the upgrade process to print the previous db_revs output and fail on the last one, somehow. It is a weird case (the introduced bug cleared all sysprefs) but yet, the output is not correct.