edit options 4.0 edit form

I have an application which has a company address selection. This is via dependent menus. Select the company, contact comes up, etc. The problem that we have is if the user forgets to select one of the dependent fields with multiple options, then the address fields are uneditiable in the edit form. For instance, a user selects a company and contact and, let's say, this contact has multiple shipping addresses. If they do not select the remaining options and they save, then the menu options for the blank fields will not load. How can we fix that.