Business process models are decision making tools intended to describe operations, constraints, and policies of an organisation. In this paper, we present an approach to control the evolution of Business Process Model (BPM) based software applications. We define a BPM change taxonomy and focus on the change affecting the BPMs and its impact propagation, through traceability relationships, to the software applications implementing them. From a formal point of view, our work consists of specifying a BPM meta-model using a typed attributed graph and a BPM change operations taxonomy based on graph rewriting rules. The specifications are then implemented using an integrated software change management platform appearing as a set of the Eclipse Workbench plug-ins.