Check and make sure "Automatically confirm missing clips added to Media Pool" is checked in General Options. If necessary, delete the clips in the Media Pool and add them back again. It should work.
If not, I know of know other way except to recreate the XML, reimport that, and point the XML to the clips. And worst case, you'll have to go through and manually relink clip by clip. Your timeline looks pretty short, so even that shouldn't be too time-consuming. If you have 2000 clips in a feature, that would be a problem.