Assign work sections of the cost database to "Set of measurement rules" or "Mapping file"

As of the 2021.e version, it is possible to copy the work section structure of the active cost database to the "set of measurement rules" (Open BIM Quantities) or to the "mapping file" (applications with the "bill of quantities" tab). In previous versions the work section structure could already be imported from a FIEBDC-3 (.bc3) file, but now the process has been simplified since it is no longer necessary to export the cost database beforehand.