Glad you got your cards working -- it's certainly easy to get some
background information into your file accidentally while merging
layers and such. That's certainly happened to me before while making
cards.
Making a piece teleporter work the way you describe is certainly
possible, but it might not be the easiest way. If you put a <
location_in_action > tag around the < location > tags, then any piece
put into that location will automatically have the action applied. It
uses the same syntax for actions as the taps. There are many examples
of this being used to automatically set the side of pieces (for
instance, flipping the cards in Word Race). However, you could also
use the move_piece action, so that any pieces dropped in the location
are instantly moved elsewhere -- no extra tapping required.
-Nathaniel