During the life cycle of an industrial processing plant, a variety of domain specific data models are generated. All these models will be changed independently by a group of engineers over time. Maintaining the consistency of these models involves a time consuming and costly manual process. Here we introduce an interactive roundtrip engineering system for processing industry environments. The system use a complementary rule-based transformation language to provide generation and synchronisation processes. For this, an interactive concept is presented with a knowledge-based system and user interaction. The goal is to have a consistent digital twin of the plant through the whole life cycle in a highly automated manner. This leads to a traceable transformation process which ensures more parallel design phases and an efficient maintenance or reconstruction of the digital plant twin.