Dallas-based Excentus, a loyalty marketing firm recently acquired by PDI Software, resumed its relationship with Southeastern Grocers through an improved loyalty program. SE Grocers rewards give customers the opportunity to earn points on purchases made at BI-LO, Fresco y Mas, Harveys Supermarket and Winn-Dixie stores, and redeem those points for savings on groceries and on fuel at participating Shell and other select fuel stations. The rewards program had been in the works since April with the announcement that American Express’ Plenti loyalty program would end in the summer.