If you really upgraded from 2.3.1.9 it looks like it skipped the scripts for 2.3.2.0, 2.3.2.1, 2.3.2.2, on up to 2.3.2.9, and it just started with script 2.3.3.0
I wonder if some of the script files failed to upload, if so you may encounter other errors. I would check in the folder /Setup/applications/mojoportal-core/SchemaUpgradeScripts/mssql for those scripts and see if they exist.
Or maybe you really upgraded from version 2.3.2.9
Best,
Joe