This is part 2 of an Idea submitted by @KPerison http://forums.autodesk.com/t5/infraworks-360-ideas/horizontal-vertical-editing-of-design-roads/idi-p...
In order to facilitate quicker edits of the horizontal/vertical components and reduce the amount of realtime regeneration the model has to calculate please incorporate:
2. If using the Graphical editing with gizmos, combine the PI editing and curve edits into one dialogue