I think you have to use %_filename% instead of %_path%
Also, the FILENAME should be included in the export data.
The example that you gave looks like a mock-up as the separating characters do not match.
Did you know that if you have the source files and the target files in the same order and selected matching numbers then you can transfer the tags with copy/paste from the source to the target. So the first target file gets the data from the first source file, the second from the second and so on.