Reconfiguring a model [600] is described. An instruction is accessed [605], wherein the instruction comprises utilizing one or more model elements to reconfigure a model. A refinement chain is utilized [610] to access a portion of the model, the portion being non-variable and associated with the instruction, and wherein the refinement chain tracks design changes for the model. A specific instance is located [615], the specific instance being closest to the portion within the refinement chain at which an inclusion of the one or more model elements alters a performance of the model to reflect the inclusion. The model is re-instantiated [620] utilizing the one or more model elements beginning at the specific instance, thereby enabling a reconfiguration of the model according to the instruction.