Hi Colin - I just loaded a Leica SL2 image into DxO PL7. DxO applies the lens module for the SL2+Sigma 85 Art DG DN lens that the image was shot with -I just exported the file as a DNG with noise and optical corrections only (this will remove all of the automatic or manually applied tone and color adjustments, etc.). DxO exports linearized DNGs so that things like optical corrections and noise reduction can be applied to DxO and then further processed as a raw file (albeit demosaiced) in other raw converters.
So that’s the workflow for a batch -if you have already done editing in DxO that you line (including color and tone, etc.) and you want to export a DNG version for RPP that only has noise reduction and optical corrections applied, you can specify this in the export dialog box (DNG - Denoise & Optical Corrections only). That way you do not have to undo your DxO adjustments or create virtual copies and remove all of their corrections except optical correction.
Exporting a linear DNG will remove the Demosaic options in RPP, because the file has already be demosaiced.
Kirk