Toad is adding a foreign key attribute to a child entity, even though it already exists (4309793)

When adding a non-identifying relationship between two entities. Toad Data Modeler adds the foreign key attribute to the child table. But, since the entity was reverse-engineered, it already has that attribute. The attribute is now duplicated. 

• Disable - FK mapping is OFF
• Enable - TDM searches for matching attributes. If a single possible mapping option is found, the FK is mapped. If multiple possible mapping options are found, a dialog appears where you choose the attribute the FK should be mapped to.
• Always Show Dialog - Displays a dialog whenever there is one or more possible mapping options. You get to choose the attribute the FK should be mapped to.

• Double-click the new relationship to edit it
• Click the attribute item in the Child column to expand the combo-box with other attributes of the child entity and confirm OK