Guild Wars 2

In order to move my ascended Quiver of A Thousand Arrows (with “Rox’s Quiver Skin” purchased from the Gem Store) from my ranger character to my guardian, I was using a method which is purchasing Transmutation Stone, then combine the stats of “Backpack Strap”(account bond) and the appearance of my current quiver(Rox’s Quiver Skin) together to make it account bond, at last jump on my guardian, use Transmutation Splitter to return the transmuted quiver to its original stats.
Well, that was the plan until I got this.
After splitting the transmuted quiver, instead of getting my ascended quiver, I got a Backpack Straps and a Masterwork Rox’s Quiver with NO stats at all, and which means, I completely lost my ascended quiver!
I know I have taken a very risky way, but I have really put a lot of gems and effort into this, if the Transmutation Splitter works as it is advertised, I should get a Rox’s Quiver Skin, a backpack straps, and my old ascended quiver right?
I don’t have a picture of my old ascended quiver, but I attached the picture of the items I got by using Transmutation Splitter.
Please help me, at lease give me an explanation!

You have actually done that incorrectly.

The first step would be to use a splitter.
Second step is to transmute anything that is soulbound on a white item.
Third step would be splitting the white item with the ascended skin.
Fourth step is reapplying the skin using another crystal.

You can only skip the first step with a splitter if you don’t care about the stats.

You would only ever get back two items with a splitter. Never more than that.