Thanks for the input michi! I’m waiting on a bag to ship into my store and then I’ll ask my SA about the chain.I think it could void it if you take it to anyone not authorised by Dior. Because it's not them or one of their authorised/recommended partners, they would probably worry about having to take responsibility for another servicer/repairer's work. It's worth asking your nearest shop if it's a possibility that they can do it for you. When I spoke about caring/repairing jewellery or cleaning for my SLGs, my SA was able to reassure me they would be able to help