Hi Abdul,
1. To update the status you can use FM CRM_STATUS_UPDATE by checking it as Inactive.
Shopping cart will be in Approved status, then you can re-order the cart by makiing a minor change in the item description and order. It doesn't go for any further approval.
2. Updte the status using the FM CRM_STATUS_UPDATE and use the FM BBP_REQREQ_TRANSFER to transfer the SC.
Regards
Hari