RECORDED DATA IS OUTSIDE AUTOCHART LAKE MAP IN PC PROGRAM

When I import my data is falls outside of the lake map provided by the AutoChart Pro pc program.  I tried going right across the lake to see if my recorded data would dip into the actual provided lake and it did not but managed to come close to the start of the shorline.  

Why is this happening?  Somehow I'm missing something I think and can't figure out how to get it to fall into the lake provided by the program.

Thanks any help would be greatly appreciated!

Go to settings on the tool bar. Increase the map area so the red line boundry box is larger than the area you want to map,