The file name being used and sent by FFC from uStore is controlled by uStore. You need to look at Message Template No: 21. This is the JDF on State transition template which controls amoung other things the file name being sent.
You will find it in uStoreadmin/Presets/System Setup/Message Templates
The ADOR name is not present in the message template by default. You will need to create it using a new message SQL to get the "Use Dial as Order Nickname" from the product propeties.
Not sure if this is a Core issue or not. We are processing orders from uStore, and have an ADOR setup that currently pulls in and outputs a generated name from uProduce. We are trying to send these files to run through FFC. The workflow is set up and outputs the files to the printer just fine. However, FFC doesn't seem change the output file name to the ADOR name. Instead, it apprears that the file name is changed to the uStore name instead for some odd reason. Any ideas on how to change the incoming file name in FFC with the ADOR in uProduce? I hope this make sense.