Quote Originally Posted by Tenchi View Post
When using this ability it says it succeeds and then nothing happens. a couple of times it's reset the progress bar like it's suppose to, but it did not give back the durability, so that would be why I assume it's broken.
It didn't say anything about giving you back durabilty.

Begin your current synthesis anew. Chance of failure increases with progress. Most effective for enhanced items.
Vague, yes, but begin synthesis anew doesn't necessarily mean to give back durability. Like gifthorse said, it's there to help increase Quality twice. Extremely necessary to make HQ Material because Material can not be touched up, and I have seen several high rank TAN HQ material using this (+3 Leather Strap etc.)