Batch renamer

I have set up a preset in the batch renamer which, at one point, imports filenames from a prenamed txt-file.
For a new rename project I just fill the txt file with new filenames and use the same rename preset on another batch.
Right now I have to restart WL7 to make it see any new content in the txt file. This can be a bit annoying if I have several rename projects in a row.
Would it be possible to make WL automatically see any new content in this prenamed txt file without having to restart the whole program?

The file is cached, for performance reasons. But I have changed it in next build, to clear the cache each time “Apply” is executed, and also when closing the dialog.