The software allows you to copy and paste model elements between projects. For example, select a cross section from one project and then right click and choose Copy from the displayed context menu.
The software will display the copied cross section connected to the cursor.
Switch to the other project. Then position the cross section along the river reach where you want it to be pasted and then click with the mouse.
The copied cross section will then be placed at the selected location. The software will automatically align the copied cross section thalweg with the river reach and position the cross section perpendicular to the river reach. In addition, the software will update the copied cross section river station ID and adjust the flow lengths for the copied cross section and the next upstream cross section.