Project transfer, budgetary control impact from one Project to Another Project

Summary:

Business Requirement:

Budgets check will be happen, commitments will be reserved when IR(Internal PR) Approved, then the Transfer order issue from Project A to Project B , the Transfer order cost will be imported to Project A & B.
Project Budget Impact:
Ex: Material purchased for one project (Project A) is moved to another project (Project B).

here concern is Project Budget can be adjusted at both Project A and B, I can disable check box for the both fund check

Project A

Project B cost

Budget at Project B 100 only

How will the budget be impacted for Project A and Project B? Should the budget be reversed at the Project A level? Also, the project cost is not getting generated at the Project B level.