That is some good information to have Almas. I should have specified that I am on GP 2015 R2. Version 14.00.0817 - I am not sure when the IV40400 table was modified. There are tolerance fields in GP2015 R2 that are not in GP 2010. I think that is probably when the incorrect Dexterity join occurred. Possibly you are on a later version of GP and the join was fixed.
My Table Relationship Definition window on my original post does not match yours.
Jeff