This looks like a follow on from your query we tried to solve in your previous thread here?
Are you assigning a jointset-id when undertaking your block cuts? This should then allow you to differentiate between sets for assigning constitutive models, properties etc. Or if you are assigning a jointset-id and it’s still not working correctly, this may be addressed in the next update with the fix discussed in the previous thread linked above.
To help with problem solving, are you able to post a code snippet of how you’re creating the joints?