fosterfication

We are in the process of shipping items to the US from my husband's former home in Switzerland and are filling out CBP Form 3299 (DECLARATION FOR FREE ENTRY OF UNACCOMPANIED ARTICLES). The form asks for his former country of residency-- this is where it gets confusing for us: - My husband is a Swiss citizen who moved to London in 2016 and lived there as a resident until 2020, when he became a US permanent resident - However, the items we are shipping are coming directly from his former home in Switzerland where he had lived for his entire life previously (and where his father lived until very recently) - We also need to fill out the "Supplemental declaration for unaccompanied personal and household effects" form, which asks for his last foreign address, which would have been in London Should we list his former residency as the UK or Switzerland? Should the last foreign address be the one from London, or from Switzerland? If we state that he was last a resident of the UK, but his stuff is coming from Switzerland, will that cause any problems since we are declaring these items for free entry? Thank you!