I wrote tutorial-shaped post to explain how mesh swapping between Lego games works. Hope, this will be helpful. Also, I was able to put Mikey from TMNT into Lego Marvel. With custom head and backpack/shell thingy. Head model materials took some time to work through, but they can be edited. QuickBMS script, as it seems, doesn't work with some Lego Jurassic World .DATs (game0.dat) and does work with others.