I just released the Beta 11 that improves the saving procedure to avoid duplicate content in .sh3d files.
Please be cautious to save your files in a new file (at least the first time), to ensure you won't lose any data.
I trust what I programmed and tested on different files, but you never know, even if the risk is very small. Please test it on the files you may have and confirm you didn't have problems.

sree.arun.kr, thanks for your tests. I'll look again if I can improve something in exportAppearance method, but I fear the problem comes from elsewhere….