In the EotE core rulebook, on page 60, the talent simply states "Choose 1 weapon, armor or other item and give it a permanent improvement while it remains in use".
I've sifted through the rest of the rulebook, but cannot for the life of me find a definition of a "permanent improvement".
I've found attachments, and mods, but not a "permanent improvement". If someone could direct me to the source and explanation for this I would be very grateful.
According to the wording, should I assume that if the item is lost or destroyed, I can choose another item to gain the benefit?
Thank you in advance for your help!