Moved from the Creative Cloud to the Photoshop forum. They will be able to help you here.
You can't save a raw file after editing in PS, you have to save it as something else. Whether you save as jpg, tiff, psd, or whatever is your option.
How are you doing the save? Just choosing File - Save?
Photoshop remembers the last "master file" format you saved something in. If the current document is capable of being saved in that format, it will default to that format for the next save.
What happens if you do the following:
1. Open your raw file, and edit it.
2. File - Save As, and in the Save as type field choose Photoshop (*.PSD;*.PDD).
3. Complete the save operation.
I'm betting that will result in your having saved a PSD format file.
In summary, change your habit to use File - Save As to save your master document and you can't go wrong.
The problem is that I always save all my files - Save As and never use save. Until 2 days ago all files under Save As were psd files. Never had a problem. Then it changed - Save As became jpg files.
So if you Save As a PSD file successfully once, do they then become PSD files again by default?
Any chance you might have changed Camera Raw to open files in 8 bits/channel instead of 16?
No - the next file becomes a jpg again - it is driving me crazy
Have you installed any plug-ins?
Maybe it could be helpful if you'd run Help - System Info and paste the results here. Perhaps someone will be able to spot a problem.
I called adobe chat and it took over 2 hours to fix the problem - they had me rename the Photoshop CC Settings to Settingsold. It worked. Now when I Save As they are psd files.
Thank You for the help