The Point node works with global or local point coordinates, depending on the Matrix Mode setting in the Attribute Manager.
If you want the node to output the exact point coordinates of polygons that are deformed by deformers, enable the separate Use Deformed Points option. You will find this option on the Attribute Manager’s Node Properties page. If the option is disabled, the node outputs the coordinates of the non-deformed object.
Alternately, a new position can be assigned to the indexed point. To do this, a vector with the new position must be applied to the point’s input node.