How to Copy items from Brush or Scatter Tool?

Hello, since I am new on D5 Renderer I would like to ask some questions i something really specific that have happened to me. I had an already existing terrain for an architecture project, usually I put my models in specific places but in some places that are out of focus or a bit further away I use scatter tool and brushes. At this point I had to reload my model and my brushes just desapeared they are looking like they are underneath the terrain. Should I just do them again from scratch on top of the new terrain or can I somehow copy the brush items (trees, rocks,etc.) and assigned them on the new imported terrain? To clarify, I have tried importing and sync cord my model and reload it and sync cord it, nothing seem to maintain my brushes and scatters. Thank you very much for your timein advance!!