You can see translation history by clicking activity tab.
Seems like someone else suggested translations.
I’m not sure how it exactly works but seems like translations that have more votes are accepted. I think that happens when translations are in suggested state. To make them approved you can switch to proofreading mode and approve them.
If someone suggests incorrect translations we can undo all changes. If you want I can setup your account as manager so you’ll have more moderation options.
Regardless vote or approve status all translations are included but crowdin determines which translation will be used.