This might not be possible out of the box with Trello, however, have you tried copying the multi-item list and pasting it in the first item in a checklist on an existing card?
It should split out the multiple items into their own checklist items. This might be a half-way solution for what you're looking for.
My partner and I were planning this relocation for years. It was our shared dream to try and live in another country. As children of immigrants, we already have experienced this once, but this still ...
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