Currently on 11.3.2 going to 11.4. While attempting first Primary I get this error:

ZENWorks detects user_generated statistics in the Zenworks Database.
Since Zenworks changes a few columns from not null to Null or vice-verse, this causes the upgrade to fail.
to continue with the process, clear the generated statistics.

I found a post online on how to find the user_generated stats in the SQL DB, and it worked. I see entries.

My question is what am I suppose to to continue, and how do I do it?

Thank you.