there is no way out.
the file a2l are compiled on the basis of the hex file to which they refer.
there is a method to change the a2l, to the extent of us operators in the aftermarket.
but a method to get there.
you open the right file with the a2l is right. find the maps you want, then you compare the different file looking for the same maps, that are there, but can be moved to address. often not very moved.