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I visited India with my family three years ago. Since then, four of the five of us have received new passports, and we don't have all of the old ones. The Indian e-Tourist visa application asks whether you have ever been to India, and if so, what your previous visa number was. How can I fill out this form, since I don't have the previous visa numbers for all of my family?
Edit: This is not a unique situation by any stretch, but India is its own country, and the electronic tourist visa application presents its own problems, since it's an online form (and not the most user-friendly online form). So I think a more specific question is warranted. When I was trying to figure this out, the various “Just explain the situation” answers available elsewhere online did not set my mind at ease.