Organizations must continuously redesign their business processes to keep pace with changing regulations, emerging technologies, or shifting business objectives. Each process modification, however, carries the risk of unintentionally affecting execution, compliance, or other established structural constraints. Ensuring that redesigning a process does not introduce any critical behavioral impact requires a careful assessment of change operations. Yet, this assessment is still done manually due to the lack of formalization and automation in existing redesign approaches. This paper addresses this gap by collecting types of change operations from literature and formally defining them. Building on this formalization, we introduce an approach that automatically identifies structural consequences, i.e., the implications of a change operation on other process relationships, for a given process. Furthermore, we propose a first idea to lock specific activity relations, ensuring that critical constraints are not affected by a redesign. The proposed approach is validated through a user study assessing its usefulness. Results indicate that users are often unaware of long-term dependency implications when altering process behavior, highlighting the need for automated support in identifying structural consequences during business process redesign.