Create a new family or system type
Duplicate a type
Why it matters. You need “Wall - 200mm - Fire” next to the 200mm generic. Duplicate in the UI, then rename, then hope nobody already used that name.
What VI MCP does. Loaded family types duplicate one way. Walls, floors, roofs and ceilings another. A name collision is refused, not silently suffixed.
Try this prompt
“Duplicate this wall type as “200mm Fire” and swap the corridor walls onto it.”