Why does solidworks sometimes flip connectors in boundary surfaces on rebuilds?  Any way to prevent this from happening?  Sometimes the boundary blend fails and all i have to do is flip the connectors to fix it.  But often the downstream features are now connected to flipped edges because the boundary blend was flipped so i have to go through the tree and fix every failed feature.  It happens again when i have to make small changes to something up the tree above the offending boundary blend. I am guessing the reason for this is probably buried deep inside solidworks code alongside all the other obscure bugs and behaviors that continue making their way into each new and "improved" solidworks version.  Ah if only i had the time to learn some other cad package....