Using an external USB drive with the LIT SUITE apps is a quick and easy way to import files and make backups of your Case Files. We recommend the Samsung T5 Solid State Drive as it has fast transfer speeds and comes with both USB-C to USB-C and USB-C to USB-A cables: https://www.samsung.com/us/computing/memory-storage/portable-solid-state-drives/portable-ssd-t5-1tb-mu-pa1t0b-am/
This allows you to easily transfer files between your macOS or Windows computers and the iPad Pro. (If your iPad has a Lightning connection you will need this Lightning to USB 3 Camera Adapter: https://www.apple.com/shop/product/MK0W2AM/A/lightning-to-usb-3-camera-adapter)