After my question on interaction between Morph and Polymorph effects, similar question now but between Dragon Claws and Monk Stances.
Dragon Claws is a morph effect that gives claws dealing 1d4 damage plus 1d6 energy damage (that scales up to 3d6 at 9th). Monk stances e.g. Tiger stance allows you to make claws attack that deal 1d8 slashing damage; are in the brawling group; and have the agile, finesse, nonlethal, and unarmed traits.
Let's imagine you used you focus spell to cast dragon claws, then with your next action you enter the Tiger stance, then strike.
How much damage do you do?
1. 1d8 slashing (dragon claws has no effect)
2. 1d4 slashing + 1d6 energy (stance has no effect)
3. 1d8 slashing + 1d6 energy (stance overwrites the damage of the claws but you keep the energy damage)
The last one seems reasonable to me and I don't see anything in the rules that says one way or the other.