The best practice that the BA should follow is to schedule additional discovery sessions with the sales users to understand what will be impacted by the changes. Discovery sessions are meetings or workshops where the BA elicits, clarifies, and validates the needs, expectations, pain points, goals, and priorities of the stakeholders for a project. Discovery sessions help to gather more information and feedback from the stakeholders, understand their perspectives and preferences, identify the gaps and opportunities in their current process, and demonstrate the value and benefits of the proposed solution. By scheduling additional discovery sessions with the sales users, the BA can better understand their challenges and requirements, and document a comprehensive list of the components that will be affected by the updated flow. References:
https://trailhead.salesforce.com/en/content/learn/modules/business-analysis-discovery/plan-and-facilitate-discove