Identify who now owns the problem and next step. Review the value case and commitments already made. Check whether the project remains active and whether the departure changed budget or sponsorship.
Map the current buying roles and relationships your team already has. Use appropriate customer, colleague or partner connections where helpful. Validate every proposed introduction.
Congratulate them where appropriate and ask about their new responsibilities separately. Do not turn concern for the old deal into pressure to intervene or share confidential internal information.
Update stakeholders, next steps and timing. A replacement sponsor may need to assess the project again. Keep forecast assumptions aligned with the new evidence.
Orbb can support stakeholder and path research. The practical goal is restoring legitimate account engagement and understanding the changed buying process, not treating the champion's move as either automatic churn or automatic new pipeline.