I just migrated my lightroom cc libuary to another computer. All worked smoothly I also linked the libuary to the locally stored originals.
However, I have noticed that I am unable to edit any of my RAW .CR2 files. I'm able to access the editing features and drag sliders etc however nothing changes with the photo. I am able to edit the same photo on my phone without an issue and the change is reflected in the sync. I'm able to edit photos taken with my phone either a DNG file or HEIC so issues seem only related to .CR2 files.
Any ideas on how this can be fixed would be great!
Sounds like maybe you clicked on a local adjustment tool (adjustment brush, graduated filter, radial filter), so now you are moving the sliders of that tool and not the general sliders. Because you did not apply the tool (you only selected it), nothing will happen.