AIR - image contains no files at remote domain

We are using NBU 5230 Appliances (NBU 7.5) at Primary site with AIR to replicate the Oracle database images to the remote NBU 5230 Appliances (another NBU domain) using SLP.

The primary job completes successfully (shows 16GB size). The replication job completes as well but with only tiny amount of data i.e. 25K and it completes in only 15sec.

When we are try restoring the database at remote site, we are unable to see the image available for restore.

Can you suggest what might be the problem....?