Cloning main site in a multisite network

I’m working on a site that we’re converting to multisite to make translations of the main site. I’d planned on using BackupBuddy to clone the main site. They’ve dropped the cloning feature (problems apparently) for an export/import feature. Unfortunately, that feature doesn’t work on the main site – only once there are subsites. The content would probably be a few hours to copy over, but there are 19 different sliders set up in Slider Pro and they take a fairly long time to set up, plus many advanced custom fields (from the plugin), etc.

Is there another way to clone the main site?