He's exactly right. If you have your ladies in flowering.. you can transplant them. But like he said dude.. don't transplant a plant that's been in flowering for 3 weeks or longer. I tend to not transplant.. if the plants are past the first week of flowering.. but that's just me. Better safe than sorry is what I say.
its better to transplant your girls just before your switch to 12/12 like the day or 2 before you switch the lights over is when i usually do it....... not usually to good for the plant if done too late into flowering (3weeks+ would prolly be too late)