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2 Winding raw to psse switches from and to bus

Hi all, I have a raw file in the same version as my psse application (v34). When I import the raw file and view transformers, I see that the to and from bus were swapped during the import (i.e., "I" bus becomes "To Bus Number" and "J" Bus becomes "From Bus Number"). It seems to be associated with the "Winding 1 on From end" box not being checked in the Transformer window. I don't see a direct property for the the winding 1 association in the raw file. Are there specific conditions in the raw file that cause this swap to occur? Thanks for the help!