Critical failure on BC7

Critical problem has come out on the trans-axle of BC7 SUBARU Legacy LSi US model on earth, Active Torque Split intermediate multi-plates computer controlled electric magnetic clutch for automatic torque converter model!
Though I had accepted the information from a factory technical adviser to short the clutch system to drive as FWD automobile, the fact that I had done it for a while might have caused the problem this time? The step wearing on the smooth slipping surface of internal constructive mechanism have to be the reason for locking phenomena in tight corner situation?
Judging from the Web site information, replacement of ATF might solve the problem like this case, so, I'm going to do that as the first step of counter-measure for my BC7?
In case I could not obtain good result, disassembling of the intermediate clutch would be performed. Now, TOYOTA Castle genuine D-2 ATF is inside of JATCO automatic trans-axle, mismatching might be there, with the same generation but different company. I know that generally the ATF is specified for the specific trans-axle, it's just like important blood type for human body, no different type of it is not allowed, the death of it would be invited if confused.
Easy choice of easy idea might have caused the problem this time, however the genuine parts they had been with different manufacturers?
I hope that total replacement of blood in the JATCO automatic trans-axle would recover the original performance?