Talk:Upgrade Event/@comment-26158287-20150520133445/@comment-28674136-20170201174510

That's not the case.

Even if the weapon you have is about it expire, if you manage to upgrade it, you will get the upgraded version permanently. Upgraded weapons cannot have temporary durability.

For example; Tactical Knife. You can craft it with 7 day durability (if you are lucky) and then try to upgrade it. If you manage to upgrade it, you will have 2 weapons; Tactical Knife for (7-how many days it took) day durability, and Double Tactical Knife permanently.