Label Hierarchy is missing after export Mails to PST using vault

Hi All,

When I am exporting the PST using Google vault and opened it in Outlook, the Hierarchy of the mailbox is missing,

I cannot see Draft, sentitem ans other user created folders in the PST, I only can see Inbox folder in the PST. This make me my security audit difficult and lost my purpose of exporting users mail to PST.

Secondly, this PST is open to outlook only, any other tool is not able to open this PST and shows corrupt PST.

I know there other ways to export files in PST but Vault is fast and easy with google supported feature. Is there any feature update that google is working to fix it.

Thank you