I am running PowerDesigner 8.0.1.293 and trying to generate "legacy" information from multiple Physical Data Models into a common Conceptual Data Model. However, every time I generate from PDM "A" I lose all of the Entities that I generated from PDM "B" (and vice-versa). I am currently working around the problem by creating an "A" CDM and a "B" CDM and then merging the relevant Entities into the common CDM, but that involves extra steps and extra files. Is this a known behavior of PowerDesigner's? Is there another less cumbersome work-around?