Scratch my last post. I'm pretty sure now that Robo is importing files into JRiver MC. Ariendelle's suggestion is a good one.
But I don't think you need the temp directory at all. Just make a Panes View with two Panes:
1. A Search List Pane with a selection for only duplicates. So this becomes a "switch" you can turn on that only displays duplicate files. When you want to find and eliminate duplicates, turn it on.
2. A File Path Pane so you can navigate by directory structure.
The idea would be to do this procedure (roughly):
1. Go to this new View we are outlining here.
2. Click on the Duplicates selection in the first Pane. Now you see only duplicates of everything in your library.
3. Go to the next Pane over and navigate to the weekly folder that you want to move files in. Click it.
4. Now you'll see a list of files in that folder, but ONLY duplicates that are in other folders too. Select all by clicking and then Control-A. Press the delete key to remove them. Choose to have them removed from disk also in the box that pops up. Boom, duplicates gone.
5. In the first pane with the duplicates selection search, unselect your Duplicates search. Now you will see all of the files that are in the folder you selected.
6. Click and select them all. Run Rename, Move, and Copy as normal.
There's something important to realize here: The duplicates ARE IN THE LIBRARY as soon as you import them. When you move the duplicate files to the Yearly directory, you're just moving the duplicates. They aren't being "created". They were already there. The processes that Ariendelle and I are describing are ways of finding these duplicates in a fast convenient way so you can get rid of them as part of your normal workflow.
Here's a wiki reference about Panes and Views in general that might help some:
http://wiki.jriver.com/index.php/View_Schemes#View_Items.2C_Panes.2C_and_Populate_TreeIf you are interested in setting up a View like Ariendelle described, or like I described, let us know and we'll try to guide you through the process. It's really not that hard. Just a good number of details to get right.
Brian.