How to Move Webform from one drupal installation to another

Hello

I created a bunch of forms using webform module in a test drupal site. I need to move it to another drupal installation. I tried installation webform module in the new drupal site, copied the following tables from test drupal mysql database to the new drupal site mysql database

webform
webform_component
webform_submissions
webform_submitted_data

But I guess that nid,pid,cid are interfering. What do these stand for? Node ID,????? and is this the right way to move? cuz I don't want to create all the forms from scratch in the new website.

Thanks.