Usage guidance

Worx4 X creates a folder which contains all of the source clips it has created (The destination you have set).
If you want all of the new source clips in FCPX then you just need to do a File>Import>Media and import all of the new source clips that Worx4 X has created.

I currently have all Projects and media within the library on FCP. When I export the XML process with Worx4 X and reimport the XMP produced into a new empty Library the media stays external. Does it have to be that way?
I also ran the same process to the same disk but seemed to get alias's. I'm concerned the will not work if I delete the original. Can someone please explain best practice?
Thanks

Crispin