The accepted scenario for the formation of galaxies involves the accretion of 
satellites, at first hierarchical (forming the spheroid) with later mergers 
perturbing the disk to varying degrees. The accretion of satellites can 
trigger dynamical changes in the galactic disk which can be difficult to 
interpret, however the imprint of the accretion event on the galaxy's 
elemental composition remains eternal. I will show some results from 
numerical simulations that account for chemical evolution and show the effect 
that the assembly history and stellar migration can have on galactic chemical 
evolution.