I've done a succesful import, great script!

If I import again. with the latest OSC database (my OSC shop is still 'live') will it just overwrite the existing zen-cart database?

I've imported an older version of the OSC DB so that I can tinker and get it all working. Once I'm done, I would like to upload the lastest OSC database so that I can go live with zen-cart. So I'd like to know if I can just import again, to basically update the database to the latest?

Thanks a lot!