I wanted to use templates as copper planes. So I created a plane, added it to the relevant net and poured the copper. The pads get connected as expected but the air wires remain visible.
Did I do anything wrong or do I need to update the ratsnest?
Run Optimise from Tools - Optimise Nets - All Nets. There are various options in Options that can be set to auto-optimise after certain functions are run.
I assume where you state "So I created a plane", you mean created the template on an Electrical layer, rather than created a template on a Power Plane layer!