Use the View select box to choose the section to edit. The Show Code and Messages button is available with on every page, and it shows the generated MySQL code that corresponds to the selected object.
Migration Problems: This either reports problems or displays "No mapping problems found." It is an informational screen.
All Objects: An object view that allows you to view and edit the object definitions. Double-click on a row to modify a target objects name.
Column Mappings: Shows all of the table column mappings, and allows you to individually review and fix the mapping for all column types, default values, and other attributes.