Sort of works.
I did that for Xtrain03b today. The card had my 1RM, I suppose obtained from my previous STS, which was great. The icon in the calendar added was STS disk 36 though. It would be great to print out the workout cards directly, like from the current STS menu (could it be STS/Xtrain?) and also chose Xtrain workouts in the 1RM menu, that would be awesome!
Thanks for all your hard work on this, it really makes the workouts more effective and fun