Customizing "Import Dummy Data"

How can I customize the “Import Dummy Data” to be my own content?

I’m using Enfold with a multisite installation on WPengine, and I’m trying to find the best solution for cloning a template site, WITH content.

I’ve tried ManageWP’s services, as they have a “clone” feature, but it does not support multisite.

I’ve also tried the WPMU Dev Plugin “New Blog Template” which KIND of works, except the WP LayerSliders do not transfer properly.

I’m ok with going through some manual steps for setting this up, just need a helping hand with where to look, and general structure/process. Just want to streamline everything for my clients as much as possible.

Thoughts? Thanx!