Uploading new WF version resets settings.

I have a watch face that I uploaded to the store and installed on my watch. I changed some of the color settings via the Android app and it showed correctly on the watch. Then I made some code updates, uploaded a new version and updated it, also via the Android app. The colors are now the original ones, so it seems like the settings have reverted to the default ones.

Is this normal? I would have thought that the settings changes should be persisted, otherwise users would lose their customization? Could it be due to the app being marked as a beta version? I'll test again when I've made more code changes to see if it happens again. Thanks.