Import .uasset without migrate

Can I import .uasset (with its own references) without migrate from one project to another?

I try to be more clear: I own some assets (with their references) in folders that are not part of a project so I cannot use the “migrate” command.

I know that I can copy those folders to the destination project content folder but i’d like to import, in the new project, only one asset with its references (…and I do not know to which files it is linked).

I don’t want to import entirely those folders.

Is there a way to do that?

Thanks

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