query diagram does not match SQL statement in Query Builder

In Query Builder, I've created a subquery and pasted an SQL statment into the Query (Query Tab). The Diagram view (Diagram Tab) does not match the SQL statemen in the Query tab.

How do I get the Diagram updated to match the Query?

Press the visualize query button on the toolbar. It should be the very last one on the right of Query Builder toolbar.

Debbie