You blew it. The correct command for low level moving of stuff is not this:

mv /empeg/fids1/_00012/* /empeg/fids0/

Instead, you should have done this:

mkdir -p /drive0/fids/_00012 && mv /drive1/fids/_00012/* /drive0/fids/_00012/ EDIT: corrected, ugh

The files inside fids subdirs do not have unique names, so moving them all to a common directory simply overwrites them with each other.

Hijack didn't do this; a human did.

-ml