This page describes the tool “Convert 2D to 3D”.
Tools > Convert 2D to 3D
2D Vector data with point, line or area objects can be converted to 3D vector data using a 3D reference.
Set the source vector file or directory via drag & drop or browse to the file location.
Set the target file for the result dataset.
Objects that could not be converted to 3D are added to a new vector dataset <original_dataset_name+'_no3d.ovf'. Change the parameters and run the tool again to improve the results.