I think the pickList form rf4.0 to rf4.2 is not same functional with listShuttle in rf3.3.3, the left item of pickList is always a the total collection and the right item is user's selected.
So, you should do a calculation, which is left=total-right.
Why does it behave like this? I guess since its a UISelectMany indeed.
It's not a good design, from the rf4.3 roadmap, we can find the guys will drive the missing components back in the plan. So, let's see if the listShuttle would be back in the laster version.
Any workaround? I will appreciate your help.
Thank you in advance.