Yesterday I noticed my iPhone photos were being uploaded as still JPGs, likely loosing valuable moments I captured in Live Photos and having some quality drop due to JPG compression. I changed my settings to HEIC + Live Photos. However, all my already synced photos would still be low quality and limited to a single frame.
When making such Camera Upload settings change, it would be great to offer an option to reupload all the local photos currently in the camera roll, replacing the instances with different settings.
Alternatively, offering an in-app option to reset the Camera Upload state in Dropbox servers, so that it no longer recognizes all photos as already synced, could achieve the same effect via a more hidden path.