There are only 3 fields : Source File, Destination File and Ignore Source Directory.
Source File field = the file that GSA "grab" from the Workspace "Base Source Dir" value (see screen shot below).
The contents of this article is also covered in the following:
Workspace Base Source Directory and Files Node
If you enter a path into this field, such as C:\Temp, you must toggle the Ignore Source Directory. If this isn't done the Geospatial Administrator will expect to find the file in the Base Source Dir.
Destination File - This is the file name that will be pasted into the project folder defined on the root level > Workspace Root Directory + Project Parent Directory + Workspace user name (see screen shot below).
If you want to take a look on what occurs when you Export your Bentley Geospatial Administrator .xml schema, go to Tools > Options > Verbose (make sure it is toggle). Hit Export.
