search issue after updating

What version did you upgrade from? And which version did you upgrade to? (if you can provide the full version number, that will be helpful)

It's a little difficult to tell from your screenshot. If you could open a support ticket we can investigate further with a web trace.

I wasn't an upgrade but an update, with the most recent database and filestorage from production, the version is 9.1.

But the search is acting weird showing invisible result sets, should it be reconfigured?

So you moved a production database and file storage folder to a testing environment? Its possible that you have content in your search index that is no longer present in your database because you replaced the database.

You could try reindexing all of your content: community.telligent.com/.../search-index-problems

So you moved a production database and file storage folder to a testing environment? Its possible that you have content in your search index that is no longer present in your database because you replaced the database.

You could try reindexing all of your content: community.telligent.com/.../search-index-problems