v2.1.3 update - download from post #1.
When a GM is on the lower features (middle) or image (bottom) layer, any named tokens moved by players on the top layer will trigger a preposition of the corresponding shadow token on the currently active GM layer. This won't work for tokens without a tooltip name (the PC or NPC in the combat tracker doesn't have a name) or a freeform token that hasn't had text dragged to it, as the token name is required to match the xPL named shadow token on the lower layer.