Order reasons are not replicating from CRM to ECC

Hi Experts,

We have a scenario where we  will create Returns Order (RE) in CRM and we will etner Order Reason (Activity Reason under Business Activity tab page) then Returns Order (RE) will replicates to ECC.

The Return Order is replicated from CRM to ECC but the order reason is not replicated.

Can anybody suggest me in this regard.

Thanks in advance.

Regards,

-Fredrick Johnson.