BAR gui shows 0 (Bytes) for a file for restore. But when restored it is 2.2G

Never experianced before and done some research in google without much luck, hence putting it here.

I have a database dump file to be restored and eventhough it was showing 0 Bytes in Java GUI, i have restored it, DBA says is ~2GB.

Any thougths only why it shows 0 Bytes.

Senerio:

* NBU master running on 7.5.0.4

* SQL database team use light speed to dump the files to a windows drive and NetBackup job runs to pick it from there.

* I do know that the Database backup started at the same time as the NetBackup backup started for the drive on the windows machine.

Thanks in advance.