AD Requester Import Issue

AD Requester Import Issue

Hello,
 
Got a bit of a strange one, I'm dong a completely new build of Manage Engine on new servers and I'm currently working on the AD Import.

The OU in AD had 18 records in it, all active.
The AD Import only selected this one OU, and stated that it has successfully imported 18 records.
However when I looked at the refreshed Requester list it had 22.  The extra 4 records imported were for disabled accounts that were in an Ex -Employee OU. 
Initially I couldn't work out why they had been imported, especially as the Import tool did not indicate that they had been.
On investigation I found that one of the live accounts had one of the disabled accounts in as their manager, who then had one of the other disabled accounts as their manager and so on. So this is why it was pulled through.

I deleted the 4 requesters, corrected the managers on the Live accounts in AD, then did the reimport into Manage Engine and it no longer pulls in the disabled accounts.

My question is though that even though I have deleted these 4 Requesters and they no longer appear in the Requester list they do still sit in the user table on the database.  Is this purely for historical reasons or is there a break in the link?

Thanks

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