some people say that transplanting them in early flower is fine,even good as they stress out and have a vigorous growth spurt.. other people say its not good.... I think if you do it carefully its ok...but maybe you dont need to transplant (if yr only doing it to get rid of the bugs?)... try using some fly paper,, I use it for those little suckers and it works well... I just place the sticky fly paper on the side(inside) of the pot and they all jump on and get stuck there... hope that helps :^)