The auto-created deck terrain is a fantastic feature in OBM since v24. It would be beneficial to have a configuration variable toggle, similar to Bridge Decorations variable, that allows the Deck Terrain to be created and exist in a separate model within the file that is auto-referenced into the Default model.

This helps keep the Default model containing the primary 3D bridge objects clean, which can be necessary for IFC exports, iTwin coordination, and plan production.