Hello Glenn.
I have deleted the duplicate K-684 profile.
The current status in the remaining profile now states "To US civil register as N3239T" which provides an adequate cross reference with N3239T and the note you added to the N3239T profile provides the reciprocal cross reference.
The only other alteration we may make is to revise the FAA model reference to C-47A as I doubt that it was modified to a DC3 when it changed hands.
Malcolm.