Hi, Did I restore my database correctly? Do I need to delete the database first? Here's what happened: I had trouble after upgrade of MW1.31.1 to MW1.35.1. I had had success with this upgrade on the test version of my wiki, but ran into a problem with the upgrade of the production version of my wiki. I may post about that later. Meanwhile, to revert back to the 1.31.1 version of my production wiki I moved the old files back in place: -$ mv teflpedia teflpediaNEW; mv teflediaOLD teflpedia And to revert the database and be rid of whatever changes I had done when I had run MW1.35.1's maintenance/update.php, I did: -$ gunzip < ~/bu/bilbo_teflpedia.20210130.MW1.31.1.sql.gz | mysql -p bilbo_teflpedia The database for the wiki is named bilbo_teflpedia, and I had created that .sql.gz just prior to my upgrade attempt, with this: -$ mysqldump -p --default-character-set=binary bilbo_teflpedia | gzip Few! Also, I had set my webhost to PHP 7.3.26 via cPanel, which both MW1.31.1 and 1.35.1 are compatible with, before the upgade attempt. Now I'm wondering, did I *combine* the new database with the old one with that: -$ gunzip < ~/bu/bilbo_teflpedia.20210130.MW1.31.1.sql.gz | mysql -p bilbo_teflpedia Did I properly *replace* the bilbo_teflpedia database with the old one? Do I need to delete the bilbo_teflpedia database first? Thanks for any advice! Roger Chrisman, venomous spider at teflpedia.com one bug at a time For reference, here's my * production wiki: https://teflpedia.com/Special:Version * test wiki: https://tp.rogerchrisman.com/Special:Version