Combine two security policy to one

My goal is going to maintain one security policy for all my VS. First off, I created one policy called policy A and added it to VS1 for learning mode. After tune up, the policy A is now on blocking mode for VS1 for more than a month without any issue. I create a security policy template base on the policy A and create another security policy called policy B. Then I implemented the policy B to VS2 for learning mode. After tune up, the policy B is on blocking mode for VS2. I want to merge the policy A and B to be one policy for VS1 and VS2 for blocking mode. So what is my next step? I see there is a merge option under active policies. I select policy B and merge it to policy A (to be target policy), am I right? Is the right steps and procedure to implement the security policy from one to all VS? I know that the better way is one policy for one VS. However, due to our resource, we do not have enough man power to work on it. The security policy need to be loose a little bit for one policy for all VS. I am wondering the way I do is correct or you have the better way to achieve my goal.