That's correct, there is currently no way to correct the dup is what we have also been told.
In the past (paper filing days, many moons ago) we would write a letter to FinCEN to document the dup for our records. We would receive a letter back stating that dups couldn't be removed from the system but would still keep everything to support our efforts to correct. We try to be very diligent not to duplicate records.
Maybe someday FinCEN will figure it out!
