I have recently started using Lightroom 6 again because DxO PhotoLab does not currently support the new Canon EOS M50 camera I purchased -- neither does LR6, but I can convert the CR3 RAW files to DNG using Adobe's free app and then import those into LR6 (PhotoLab still doesn't like the converted DNG files, since it actually has to support the camera body itself). I had been away from Lightroom for several months, and couldn't figure out why I couldn't see the folder with the DNG files. I forgot I had to import them! So that was my brain-dead moment for the month (hopefully).
Its frustrating when you're forced to switch software like that. I enjoy using PhotoLab so much after years of being a Lightroom user that I would find it difficult to go back. I think if DXO was no longer an option I would strongly consider using Capture One which I played with for a month.