qilin,
I have not completed my "investigation" of FileCenter but I'll inform you about it anyway. I have long wanted to find a "PaperPort"-like system that is peppy over a network and peppy moving in and out of subfolders. PaperPort is not. (Although Synapse's COM method of getting directly to the right patient is quite helpful).
I was quite impressed with the speed of navigation of FileCenter.
I am hoping one day to replace Synapse's PaperPort button with another button, hopefully maybe FileCenter !
My trial demo has expired but I am going to contact the company about an extension when I have time to continue my investigation.
I feel that FileCenter might make your "paper chart migration" smoother, depending on what your goals are.
Check out, http://www.lucion.com/filecenterpro-overview.html