Edit: To anyone who may come across this with the same question, here is what happened. I originally transmuted the skin of a berserkers Light of Dwayna
onto a back strap, and later onto a rabid Tempered Spinal Blades. Using the splitter gave me the Light with ascended stats back, along with the blades, but both of them had rabid stats. So you will not be able to change the stats again by using the splitter.
Has anyone used the splitter on items that originally let you choose your stats? I would like to change the stats on my spinal blade with the Light of Dwayna skin on it. Would I receive the version that already had the stats selected, or would it basically be a new spinal blade?