ERROR: Upgrade failed

I’m trying to upgrade my database from ojs2 to ojs3. but I got this error. I found the table " atricle_migration" in my database table. should I drop it or not cuz it has more than 7 columns and 25 row.
By the way I don’t have a backup from before the OJS 3.0 upgrade was attempted and this is the only back up right now.
any advice?
thanks in advance,

$ php tools/upgrade.php upgrade
[load: upgrade.xml]

[code: Installer Installer::checkPhpVersion]

[code: Installer Installer::syncSeriesAssocType]
[data: dbscripts/xml/upgrade/2.4.0_preupdate_usageStatistics.xml (skipped)]
[data: dbscripts/xml/upgrade/2.4.0_preupdate_usageStatistics2.xml (skipped)]

[code: Installer Installer::removeReviewEntries]
[data: dbscripts/xml/upgrade/3.0.0_preupdate.xml]
ERROR: Upgrade failed: DB: Table ‘articles_migration’ already exists

Hi @juricks,

It sounds like you tried an upgrade before, and it failed for some reason, and now you’re trying again. It is unfortunate that you don’t have a backup from before the upgrade because now we can’t be sure what state your database is in and it’s already run the removeReviewEntries and part of the 3.0.0_preupdate. You can try dropping the _migration tables (there are several) but I am afraid that you’ll get an inconsistent database afterwards.