i posted a reply and it didnt show it.
again, dont overwater when transplanting. just water the soil enough to get everything good and damp ONE time. then let it sit in the sunshine for awhile and see if it doesnt perc back up. Iv read that if you have a plant in a potting container and abruptly move the container(drop'd it, bump'd it) the leaves will all droop down for awhile on the whole plant. What has really helped me with cuttings bein transplanted is superthrive, its hormones (not a fertilizer). its pretty much a multi vitamin for the plant so it can do all of the small basic functions better, helps recovery ALOT.
good luck