Will my existing site data be lost if I click the Import Dummy Data?

Hey,

I just purchased your Enfold theme yesterday and was afraid of activating it yet. I want my site to be like your default demo, while checking your documentation, I saw that I can import your demo data by clicking the Import Dummy Data, am I correct? If this is the way I can get my site look like the demo, my question is: will the Import Dummy Data function will delete my existing site data? Any suggestion will be much appreciated!

Linortek