Did you try it? I've never thought about when in the process the plane shapes are made (I'm a fan of copper pour instead of planes). Change your constraint, and then use modeless commands SPO followed by SPD to see if it changes.
@johnduquette Could you please explain bit more ? I am interested to apply the new plane clearance constraint to routed layout i.e. when all routing is done with planes having default constraints. I don't think that new plane clearance constraints will apply automatically for the traces which are routed already. I have checked. Is there any way to apply new plane clearance constraints ?
In PADS Layout, plane shapes are defined with <Tools><Pour Manager> when 'Plane areas on layers' is checked. So do this:
Run <Tools><Verify design>(clearance) to make sure everything is okay before you start
Change your constraint/design rule (Integrated/Netlist)
Repour your shape with <Tools><Pour Manager> (this will repour the plane area with the new design rule)
Use <Tools><Verify design>(clearance) to make sure everything is okay
I found it under Planes => the first option. It can change the pattern of through hole and also SMD to planes.