This is just a little heads up, for anyone interested.
In Harmony/Animate etc etc you can hit a little round button to make a peg and associate your current drawing layer with it. Nice.
if you disassociate your drawing layer from the peg, the peg disappears from the timeline.
That peg still exists in your Network.
Just a heads up.
EDIT: There is a preference you can set to show unconnected pegs.