Consider, I have created a New Application which is Build from a Blueprint (having one Case Type).
Now I have modified the existing Blueprint and modified the same case type by adding more steps or by removing the existing steps , when i am importing the updated blueprint with the option Extend from Blueprint, and while importing i chose the case type build option as “Use existing”, after the build the system is not creating the rules with new changes, it is just creating a New branch with no rules in it.