Disconnect a prefab 2019

Hi im having some prefabs in my game which are disconnected from their source prefab (they were before updating to 2019)

With the new prefab workflow i cant disconnect a prefab anymore?
I wanna work with the disconnected prefab normal inside of the editor. I dont wanna change the prefab object itself, since im shifting elements out and in (its basically a skin overlay system).

When i unpack the prefab it loses the connection completly, when i unpack completly it does the same.

How can i disconnect prefabs in 2019?

Thanks!

Just read some details:

“Give some, take some 8 • No more disconnected Prefab instances • No more editing directly in the Project Browser”

Ok how can i hack into this? Apperently some of my old prefabs are still disconnected.

Im using the prefab system as a skin overlay, i move elements in and out for positioning. With the new system its way harder to layout elements

Ill answer it myself:

you can still overwrite the prefab with some deprecated methods:

public GameObject prefabSource;
[InspectorButton(“ReplacePrefab”)]
public bool replacePrefab;
void ReplacePrefab()
{
#if UNITY_EDITOR
PrefabUtility.ReplacePrefab(gameObject, prefabSource, ReplacePrefabOptions.ReplaceNameBased);
PrefabUtility.ConnectGameObjectToPrefab(gameObject, prefabSource);
// PrefabUtility.DisconnectPrefabInstance(gameObject);
#endif
}