When importing my Canon CR2 RAW files, I convert them to DNG files into a folder with that days date, and automatically add my copyright information on import.
If there are any photos I want to process further I'll export them to a working folder, still as a DNG file. In the export dialogue box I can't seem to be able to include all metadata information - including the copyright information.
Will Lightroom allow me to do this? Or when exporting to my working folder, do I need to convert these files to TIFF?
When you export to DNG you don't have the option to select which metadata to export (the dialog box is grayed-out, and it defaults to All Metadata). you just export every single metadata you already have in you master file.