powershell – 如何在交换混合环境中备份/导出office 365电子邮

当我们想要从onpremis导出电子邮件时,我们使用下面的命令导出邮箱和存档.

New-MailboxExportRequest -Mailbox "user" -FilePath mysrvl$PSTMailbox-user.pst; New-MailboxExportRequest -Mailbox "user" -IsArchive  -FilePath mysrvl$PSTMailbox-user-archive.pst -confirm:$false

New-MailboxExportRequest适用于onpremis用户而不适用于office 365.
有没有办法使用PowerShell将Office 365用户邮箱导出到pst？

到目前为止我尝试了什么：

我登录到办公室365

$UserCredential = Get-Credential
Import-Module MSOnline

Connect-MsolService -Credential $UserCredential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication  Basic -AllowRedirection

Import-PSSession $Session

并尝试了New-MailboxExportRequest

但它会产生错误.显然办公室365不知道那个命令

PS C:Userspp> New-MailboxExportRequest
New-MailboxExportRequest : The term 'New-MailboxExportRequest' is not recognized as the name of a cmdlet,function,script file,or operable program. Check the spelling of the name,or if a path was included,verify that the path is
correct and try again.
At line:1 char:1
+ New-MailboxExportRequest
+ ~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (New-MailboxExportRequest:String) [],CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

另外Get-Command * Export *结果如下

尝试谷歌搜索,但找不到可行的选择.有人可以指导我吗？办公环境中的兼容命令是什么？

PS：
我已尝试使用E5许可证https://www.codetwo.com/admins-blog/how-to-export-office-365-mailboxes-to-pst-using-ediscovery/,它在GUI中完美运行.但我的担忧是电子发现,并且有许可证可以使用PowerShell吗？我的意思是通过powershell脚本/自动化？