Hello Francis,
The initial posture only affects the very first position. Let's say you've got a series of LIN positions, then KUKA|prc will automatically generate a PTP movement at the first LIN position with the status taken from the menu.
However, in that example the first movement already is a PTP movement, with a given status (default 010). Therefore, the initial posture has got no effect.
Hope that helps!
Best,
Johannes