If you cannot delete objects that were once connected to Grasshopper, try this workaround:
1. Identify the layer where these objects are located.
2. Duplicate the layer.
3. Copy any objects that you do not want to delete from the old layer to the new layer.
4. Delete the old layer. This also deletes the objects still on it even if they are still locked.
Important: Do not select a new layer in the upcoming window. Otherwise they will not be deleted but moved instead.
Operating system used: Windows 10
