I was editing for someone else and the like the xmp files to see the RAW adjustments- I edited them as DNG because that is how I'm used to doing it. Now I know but they want me to supply the xmp files which did not write. Is there a wat to do this or do I need to re edit them as RAW's?
DNG files don't have XMP sidecar files. Everything is written to the header of the DNG. And as far as Lightroom goes, It will be necessary for you to specifically write the data to XMP files. Otherwise the adjustments will only be stored in the catalog.