Transfer from OSX Garageband to iOS Garageband?

Is there any way to transfer projects or even individual tracks from OSX Garageband to iOS Garageband?

I'm a guitar player and over the years I have laid down a heap of rough scratch idea riffs in Garageband for Mac, many of which I haven't progressed much beyond one or two short guitar tracks and sometimes a bassline.

I have also recently started a long-ish commute to and from work on the train & bus so I have a bit of time to play around with Garageband on my iPad.

I'd really like to flesh out some of the basic riff ideas that I've started in my OSX Garageband and see if I can add rough bass lines, drum lines and possibly vocal melodies (using the smart keyboard) to expand on what I have so far but I'm not sure if I can import Projects or individual tracks into iOS Garageband.

Even if I can't import full projects, I think I could still see some benefit from importing one track at a time, even if I have to import it as an audio file, rather than a track. Would there be a simple way to do this if I can't import full projects?