Q. We are developing a new website and want to move the content can I add the plug-in data we already have, into the new website?

A. If you are moving something like a staging/test site to a new site and want to bring everything over intact , the Store Locator Plus author strongly recommends looking into the WordPress backup tool Vault Press, or better ,  Jet Pack.   One of the features included , besides real-time incremental backups of your site with restore points, is the ability to restore the site to an alternate site.