Adjusting all the image format settings for a file may be a bit cumbersome. Therefore RawGfx mode will remember format settings for the last 10 opened files. Re-opening a file automatically restores all settings as they were when the file was closed.
Triggering preset Auto Detection or adjusting the settings manually will override the remembered settings.
The history is stored in the System Registry, see Windows Registry Entries. The menu item [RawGfx|View|Preset|ClearHistory] can be used to purge this history.