Cross-editor DnD system

[dsipetcher]

Hi! I've separated my blocks by individual editor instances, so I can connect separate HocusPocus connection for each one of them. Now I'm struggling to restore DnD system to it's original view to the user, so he can drag ListItems across separate editors on the page. Now i did addition of element to the new position in drop zone, but element is not dissapearing from it's past position. So i wondering, maybe i need to toggle some event to let the original position know, that i commited a drop of that Item, so it can be removed from that position?