This is a problem with the PPC OS, at soft reset it automatically defaults back to Keyboard, unless you have a 3rd Party software program (Like CaliGrapher from
http://www.phatware.com/) that will allow you to modify the setting.
There should be, or will be, some sort of Tweak utility that will allow you to change the default Input method on soft reset, guaranteed it's in the Registry somewhere - and I'm sure you'll see something in the "Utilities" section before long, just keep your eyes open!
Sorry I couldn't help more,
Nick