One thing that happened when you were gone, well possibly happened, was that arms lore now gives DI bonus to weapons and resist bonuses to armor when crafting. I an not sure if it also bumps DI on rings but I am betting probably not.
Most likely:
One thing I am sure of is that the diff. types of new ML items all have their little special add on property. If you get lucky to make a 25% DI increase ring and have the bonus then kick in, you would probably get that ring. Now the odds of that happening are super low as you don't always get the DI bonus for the magical turquois ring, just like you dont always get EP on the citrine, and you rarely get high stats onthe original generation of the ring.
So...
step one:
have the original stats of the ring being related come out to 100% intensity or close to it for DI
step two:
get the modifier for materials and hope it is the DI and not SSI one