How to copy EFF value from order management to subscription management for return orders

Summary:

Hello Team,

We have setup the necessary service mapping and algorithm to copy values from order header EFF to subscription header custom fields, and

order line EFF to subscription product custom fields.

This works fine in case of a new order creation and interfacing to subscription management.

But when we create a return order (with updated value in the EFF at header and line) against the original order (interfaced to OSMC), it results in closing the original subscription but updated EFF values from the order header/line is not updated on the subscription header/product.

Can you let us know if this is an expected functionality, or does this require any additional setups.