I have an associative entity that has two relationships both containing the Policy_Number attribute in addition to other attributes. The current default settings results in two attributes (Policy_Number and Policy_Number_1) showing in the associative entity. How do I "fold" the Policy_Number_1 attribute into Policy_Number?
folding is possible for FK attributes which have the same originating attribute. You can do it in entity dialog - "Overlapping Attributes" page. You also can change that setting in engineering dialog during engineering to relational model - "Overlapping and folding keys" tab.