Caravan Pictures has promised to pick up Gail Parent’s feature pitch “Breach of Promise” for a mid-six-figure pricetag, sources said Tuesday.Idea is a romantic comedy about an engaged woman who takes her fiance to court to enforce their engagement after he breaks it off. Roger Birnbaum, prexy of Caravan, will produce. Buena Vista will distribute. Parent and Olivia Goldsmith recently sold “Switcheroo” to New Line Cinema and Storyline Prods. Parent’s other credits include “All I Want for Christmas,” “Breaking the Rules” and “The Main Event.” Her TV credits include episodes of “The Golden Girls,” “Tracey Takes On … ,” “Amazing Stories” and “Mary Hartman, Mary Hartman.” Her deal was brokered by Pat Quinn of the Metropolitan Talent Agency.