Error deleting Exchange 2016 database

I am unable to delete my Exchange database, I'm getting the following error message:

exchangedberror.png
When I run the command to see if there are Mailbox request still there, I get the following results:

exchangeexporterror.png
There were a few more results there, but I was able to remove them. However these leftover results don't have a username under Mailbox and I have no idea on how to remove them.
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IT MeetjeslandAsked:
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zvitamConsultantCommented:
Try:

Get-MailboxImportRequest | ?( $_.RequestQueue -eq "Mailbox database 1371462835") | Remove-MailboxImportRequest  -Force
IT MeetjeslandAuthor Commented:
Tried it, it didn't work.
SysToolsData Expert - Recovery,Backup,MigrationCommented:
To Remove Exchange 2016 from Windows Server, You canvisit https://technet.microsoft.com/en-us/library/jj657725(v=exchg.160).aspx
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zvitamConsultantCommented:
Did you get any error messages upon failure?
SysToolsData Expert - Recovery,Backup,MigrationCommented:
Try to restart the Information Store Service ( IIS) and try to delete again.
IT MeetjeslandAuthor Commented:
Restarting IIS and the information store does not resolve the issue. Same error message when trying to delete the database.
Vidit BhardwajAdminCommented:
It means you have stale entry, use adsiedit to remove the import/export requests, configuration partition -servives Microsoft exchange - organization - mailbox replication - mailbox import/export delete the problematic ones

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IT MeetjeslandAuthor Commented:
Worked by removing the import/export requests in adsiedit.
Vidit BhardwajAdminCommented:
Thanks for sharing.. happy messaging!!
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