Best Practice for re-using Test suite in different Test plans??

Hi,

I want to know in what all scenarios,we can re-use test suites in different test plans.

Lets take a sample scenario:

I have created a Test plan (Test Plan A ) and added the test cases in test cases section,which are planned to execute in this plan.As i want to run these test cases sequentially, I have added them in a test suite and executed the suite, Which is successfully executed with a result.

Now, In my next Test plan (Test Plan B ) i want to run the same automated test cases . Can i add only test suite in the section and execute the test suite? If i do this, When i browse test cases and filter by test plan (Test Plan B ). I cannot list the test cases

(Or)

Should i add test cases in plan , create a new test suite and add the same test cases in the suite,every time when i want to use the test cases in different plans?

What is the best practice in this scenario?

Advice on this will be appreciated.

Regards,
Hareesh.