Extrude and preserve UVs

I want to know if there is a script or function in max equivalent to Maya's Bonus tools to preserve uv's while extruding and inserting polygons?

• verveinc games

The Preserve UVs checkbox in Modify Pannel works or not?

that check box does not work as in maya's bonus tools

hint ...

little try with box....

create box ---> convert it to editable poly ---> apply texture --> apply uvw box ---> apply box as uvw [set it correct] ---> back to editable poly and add some modify to its face or whateveer---> when done set it back to uvw mapping ---> bla..... easy....

But What about on objects that are curved and and already UV unwrapped?