Hi, I have just downlaoded a map for my country with nokia maploader....the process was tooooooo long

and when the map was downloaded that was it...I didn't really see that it was transfered to the N95...
I went outside and the signal was ok and everything worked fine...
So what is my question...the same map that i zoomed in yesterday is still here, so I'm wondering why did I download a new map of 140 mb and put it on my mem. card if it is the same map that was shown before i bought a memory card and downloaded this map?
I thank you for any answers regarding this question