deformed lattice as origin

i have a lot of objects which are placed in an irregular field. iwant them to merge together, so i tried to rebuild the field with the lattice and tried to use that as the origin of the lattice. but as soon as i’m applying the lattice modifier to one of the objects its already deformed. it seems the transformation applied uses the transformation from the original rectangular lattice to the state i would like to use as origin.

my question: is there a way to use an already deformed lattice as starting point for a deformation?

another question to answer to myself. i just found a request in the blender wiki thats exactly what i want. for the ones interested in it:

its the first topic on that side