While Openbridge elements have lot of great data attached that can also be read by itemtype expression, however as soon as we do any modification to solid by the usual modify solid command, the element is converted to smart solid and all the OBM Data is gone, it maybe logical as there is a paramatric solid in the background which has all the data but as the solid is modified it creates a new smart solid which has no OBM data, however it would be good to have some option to carry through the data to smart solid. may be itemtype expression "getrelated".