The project manager should include knowledge transfer sessions between the project and operations teams at every stage of the migration project. Knowledge transfer is the process of sharing or disseminating knowledge from one party to another. It is essential for ensuring that the operations team is ready and capable of supporting the new system once the project is completed. By including knowledge transfer sessions at every stage, the project manager can ensure that the operations team is aware of the changes, benefits, and challenges of the new system, and can provide feedback and suggestions to the project team. This will also help to build trust and collaboration between the project and operations teams, and reduce the risk of resistance or rejection from the operations team. Creating a lessons learned register to include operations team training for future projects (option A) is a good practice, but it does not address the current situation or the needs of the operations team. Changing the project management plan to add a final stage for product handoff to the operations team (option C) may be necessary, but it does not ensure that the operations team is prepared and trained to support the new system. Preparing detailed documentation to be shared with the operations team during project closure (option D) is also important, but it may not be sufficient or timely to enable the operations team to understand and use the new system effectively. References:
* PMBOK Guide, 6th edition, page 417-418, section 12.3.1.3 Knowledge Transfer
* [Agile Practice Guide], page 77, section 5.2.2 Knowledge Transfer
* PMP Exam Prep, 10th edition, page 445, question 445, answer and explanation