When importing a HEC-RAS 3.0 modified River CAD file, I created a new reach and checked the box for maintaining the topo links. The HEC-RAS file had modified geometry information and steady flow amounts. These modifications were made to a HEC-RAS file that was exported from River CAD. The RUN ANALYSIS works fine and the results from River CAD matched those from HEC-RAS. However, when the floodplain mapping feature is tried, an error message pops up saying "Unable to display topo results". Is something else required to plot the WSE on the topo? Prior to creating the new reach, the topo map results were plotting fine.