Interface 9.1 & 9.2 - Planning Options

Hello,

I have a scenario where I need advise. We have a couple of business units (JDE 9.1). There is an ST/OT relationship between these two, where plant A supplies to plant B. Going forward, plant B will move to JDE 9.2 and hence the regular ST/OT will not be possible. We are planning an interface to move the OT messages to JDE 9.2 so that ST can be created in plant A (As normal OP, SO orders where plant A will be treated as a normal supplier). Could you advise on the best approach to achieve this?