Once layers have been synced, they can just as easily be unsynced.
How to unsync layers
- In the Timeline view, right-click on the child layer of a synced pairing.
- From the right-click menu, select Unsync Layer.
The parent layer is unsynced and the link icons disappears.
NOTE If this menu item is disabled, then the selected layer is either the parent layer or a layer that is already unsynced.