
Hi @HASE
This is by design. When you upload/download a file from OneDrive online, OneDrive on mobile phone, it will be treated as a new one.
Thanks for your understanding.
It's recommended to use OneDrive client on Windows, you may copy images and paste them to local OneDrive folder. By this action, OneDrive client preserves the original date of creation.
For your requests, there are some similar threads on Microsoft Feedback Forum. Here are 2 of therm, and you may vote them up.
Add the function of uploading photos according to the original directory structure
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