Hi all, I have recently started using TUFLOW and am having a few difficulties with a Map Data feature. I currently have water level (WL) data at two ends of a horizontal boundary condition (BC) line (please see attached image) and need to interpolate WL the along the BC line. To do so, i've created two CN nodes, at the two ends of the BC line and have converted the BC to a HX line, so that it reads the values from each CN node and interpolates along the line. However, i cannot snap the CN points to the BC line as they are in different coverages. They sometimes display in the BC coverage but a