I have made a four layer board using Altium Designer, while viewing the gerber files in the gerber viewer (Gerbv viewing software) for the power plane and the ground plane, I am unable to see the copper pour I am only able to see the slots for through-hole via and micro vias. After that I called Altium re-seller and he told me that it is the native format, if you are not seeing the copper it means there is copper in it. I have attached images below, but I am unable to get the why there are no copper pour in the power and ground plane, if I give it for PCB manufacturing will the copper pour be there in the Ground and Power plane.
The plane layers are usually drawn in negative (not native) format - what you see is "not-copper". The board shop does the necessary magic to ensure that there is copper everywhere on the plane layer, except where there is something shown on the Gerber artwork.