Hi Vikram,
That thread was a bit different since I'm trying to determine the sold to party based on the ibase. Taking parts of that thread, I noticed their access seq had the "Determination as Business Partner" flag set. So, I copied AIC3 to ZIC3 and set that flag and update the partner determination to point to ZIC3. It did not work though.
I haven't needed to do this since 7.0 and I remember it being easy then.
Any other thoughts?