The Center elements tool takes into account all assemblies in a drawing. However, it is sometimes the case that the drawing from the CAD program is too large in a scale of 1:1 or that the distance to the coordinate cross is too large. In this case, some of the drawing may disappear off the screen. You can bring the entire drawing into view by using the display tool. If individual elements of the drawing that are not needed are far outside the drawing area, delete them. Centering brings the entire drawing closer to the coordinate system. You can also scale the drawing in the starting dialog box for the import process. However, this can affect the quality of the 2D illustration after projection.