A while back i lost a couple of weeks worth of DNG files whilst swapping systems. The images have been imported into lightroom, edits made etc, and are obviously now showing as missing. Is it possible to reproduce the DNG files from the original RAWs in one smooth process so that they sit in their correct places and lightroom can find them again?
Useful notes: Files are CR2 and where renamed before lightroom so have the same name as missing images in catalog (excluding the extension (CR2 & DNG)).
In the library module, highlight all of those raw images. Then, under the Library menu, choose the option to convert to DNG. Choose the options that are appropriate to your situation. That is, if you are using Lightroom Classic.
So if I understand you correctly you do have a backup of the images, but they are original raw files while Lightroom has them cataloged as DNG? Use Adobe DNG Converter to convert a copy of the original raw files to DNG. Then place those DNGs where Lightroom thinks they should be.