Transferring mscz files in Songbook app from old iPad to new iPad

I am going to be purchasing a new iPad Pro when they are available, and will be wanting to transfer all the mscz files in the Songbook app in my current iPad to the new iPad Pro. Will this happen automatically when I sync my new iPad Pro to the data/apps of my old iPad using iTunes back-up/restore on my home computer, or will I need to implement the transfer in some other way, and if so, what is the most efficient way to do it?

Also, is there some easy/efficient way to transfer mscz files In Songbook from an iPad to/from an Android device (such as a Samsung Galaxy Tablet)?

Thanks much

Andy