After have sucessfuly install CTB (with BP-BGT-NEJ-DSOTSC),I start a quick game to test out if everythink work find. Right after gorin death I head south to the hight edge and then west, the link to the west lead directly to the last maps at west (just under candlekeep and it have a hole between the 2 maps (hight edge and coast)
so I returne to the hight edge and this time travel to the south and suprise im on the missing maps then I try travel to the est (from the missing maps) and it lead me to the road maps just south of Beregost. I dont know about more link maps.
this is normal or my game is mess up one more time? 

Don't worry your game is fine. The current map is a bit messy, because all the BGI map icons did not fit nicely onto the
CtB map that is currently used for BP-
BGT. They had to be moved around a bit so that they at least do not overlap, unfortunately this leads to the effects that you noticed. It's really nothing more than a graphical glitch...
I am currently working on a revised map and it will be up after the coming weekend. Have a look at
this thread for more info.