If you are using a PC, you may use Voidtools' excellent "Everything", a tool that, when it runs as a service, finds any file as fast as you can type.
when Poser (any version) asks you for a file, that's because its location changed. Once you know the new location, save the Poser file again.
I know that there are external tools, such as PoserFileEditor, but there are others, even in Rendo's store.

𝒫𝒽𝓎𝓁

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