So I didn't notice that there was an update rolled out (1.5). I have edited some RAW files and developed. Still noticed that the EXIF files aren't retained. I was expecting that it was solved the last update since this topic was touched for more than a year now.
However, I have noticed that once the developed photo was imported to the Photos app, the date is still there. It just doesn't show when the JPEG file is saved on the desktop (I assume this applies to any folder in my Mac). I'll try to save it to a disk and view the file with a windows PC to determine whether the problem is with my Mac, or Affinity's.
Please solve this problem. I love the SW, I hate how it deals with my developed images' EXIFs.