Test Case resue in multiple test plans

Hello,

We would like to use the test case in multiple test plans, but when i add the test case to other test plan and when we try to execute it still mapping the execution records to the old test plan.

As a work around if we duplicate test case, i need to add this expicitly to test plan again. This is tedious for me to do this for 100 test cases every day.

Is there any work around for this ....?

Thank you....!