some will break off. as long as root ball is intact and good size, it will replace them. i use peat pot method, so i move the soil and root into 1 gal pot without disturbing the roots at all. last time i used new designed peat pot and that made a mess of things. the roots were not penetrating the peat pot. had to score them before moving them in and some, just removed all peat pot. but they all lived. with Moscatel Preto, i used old peat pot that i had left over. roots are penetrating the peat pot at this point and i have enough roots to just take the soil/root in the peat pot out of the cup and put into same soil mix in 1 gal like a plug.