Hello, Having some difficult to understand the FBX PolygonVertexIntex function. For instance a plane with 2 triangles gives the following : PolygonVertexIndex: *6 {a: 0,3,-3,0,1,-4} But I was more waiting about index from 0 to 3 (vertex count = 4) I understand the negative value is the last index of a polygon and can be…