Previous visa copies for a Schengen visa application

I need to apply for a Schengen visa from Switzerland. In the application, it asks for previous visa copies. I have lost my previous UK BRP card. What should I need to do? Do I need to provide visa copies for the last 5 years? If it is the last 5 years, my UK visa BRP card was issued before 5 years but my stay falls within the 5 years. What should I do?

@toy: https://travel.stackexchange.com/users/4022/toy I think you had a similar experience. Appreciate your advice.

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