Is the info stored in H9 Control data that will go away if I replace the iPad?
If you’re referring to user preset lists, yes. This type of data lives on the device. That’s why I always email my preset lists to myself in case I need to put them on another device.
Unless you’re regularly backing up your iPad, either to iCloud or to a local computer running iTunes, in which case you *should* be able to install that image on a new device and have everything ready to go.