I don't think you can make the circumstanced version of the rule as a base rule.
If you want to stop the circumstanced rule (eg: 01-01-10) from getting called, you have to save-as the default (non-circumstanced) rule to a higher version (eg: 01-01-11), and make it a base rule as shown by Bhanu.
However you have to keep in mind that making the default rule as base rule will prevent all the circumstanced instances of that rule below the new higher version (eg: 01-01-11) of the default rule.
I have a query. In case there is a Circustance Template in 03-90-01 Version and I do a save as of the same rule and Add another property its throwing some exceptions. Is it because cant we change the Circumstance template once created and referred so i need to create another Circumstance Template with a different name
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