I’ve run into an odd behavior that doesn’t seem to be documented. When I delete an attachment from an email message via Remove-MgUserMessageAttachment, Graph appears to strip all non-Microsoft X-* Internet message headers from the message.

For example, an existing X-Spam header will disappear, but X-MS-Exchange* headers will remain.

Is this behavior documented anywhere either as a bug or a feature? Is it just me?

​I’ve run into an odd behavior that doesn’t seem to be documented. When I delete an attachment from an email message via Remove-MgUserMessageAttachment, Graph appears to strip all non-Microsoft X-* Internet message headers from the message. For example, an existing X-Spam header will disappear, but X-MS-Exchange* headers will remain. Is this behavior documented anywhere either as a bug or a feature? Is it just me?  Read More

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