It definitely stresses the plant out if it goes from veg -> flower -> veg. Depending it can go hermie or just be very unhappy. Still, you can re-veg a clone taken from a flowering plant and they often turn into bushy branchy monsters, if you can baby them through the transition. They'll often throw out mutant bud/leaf growths and non-serrated leaves until they stabilize. I found it really fascinating but not something I'd do as standard procedure.


Quick edit: the plants I'm talking about with weird leaves were clones taken from flowering plants usually well into flower. Your clones might be a bit stressed going back to 12/12, maybe take a few extra in case?

GL