Ответ:
Элементы ребер не учитываются ни при импорте, ни при экспорте из RFEM в Revit. Ribs are converted to "beam" elements in either scenario.
The comparison in Images 1 and 2 between the rib element in RFEM vs. Revit can be seen.
The eccentricity is applied, but it is not listed as a rib element and does not include integrated widths.