Attachment issue in REST to SOAP

HI

Rest to PRoxy synchronous scenario wherein we need to send an image (jpg) to PO 7.5 and then teh same is uploaded in ECC system.

The current flow is already running in PI7.31 with advantco rest adapter .

System details :PO7.5 Sp7.

Error: INstead of image name xxx.jpg visible in ecc sxmb_moni as an atachment, it appears as cid:att-27478460833611e7a2d00000011ec322@sap.com

Am currently testing the same interface in new PO box.

Thanks