Remove autoblog duplicates where source and destination are the same blog

Hi there,

Is there a way to remove autoblog duplicates where source and destination are the same blog? Meaning that the original post originates from the same blog that it's posted to? We're using autoblog + global tag feed to help cross coordinate content within a wordpress multisite. The issue comes in when Site A tags a post with "Category A" and the autoblog feed pulls all posts that are tagged "Category A" to Site A. I see many filters in the autoblog feed setup, but not one that seems to apply to this. Help?