The easiest way to view the surrogate rules is to go into the Interactive tree utility once your model has been fit (unless you are already there). To access this functionality, click on the desired Decision Tree node and then click on the ... to the right of Interactive. Once the Interactive utility opens, click on the desired node and then click on View --> Surrogate Rules Detail to see the splitting rule(s) that were created. Let me know if you have any trouble locating it.
Hope this helps!
Doug
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