I have had VCA clean my gold motif necklace a few times using the machine they have and I wear it daily and the code is still there. I would need a magnifying glass to read though and my necklace is only a year old.
Might want to ask your SA.
I called and they said since it is a soft bracelet and the wear and tear would make it smoother
I also wear it with 3 loves so perhaps that’s what happened . They said they can re inscript it but if it’s wear and tear I think it will happen again..