problem using sidhist.vbs

[gilrim]

I've migrated one user from domA to domB, and have since deleted the original user in domA and created a contact, that's forwaring mail from that org to the new one.
First now I've realized that the sIDHistory for this user haven't been migrated. This poses issues for him when accessign network recources, where he needs to be reassigned permisssions for the "new" user. I've tried running "cscript sidhist.vbs /srcdc:domAdc03 /srcdom:domA /srcsam:userA /dstdc:domBdc01 /dstdom:domB /dstsam:userA", but that returnd the following, pretty useless, error message:

Microsoft (R) Windows Script Host Version 5.6
  Copyright (C) Microsoft Corporation 1996-2001. All rights reserved.
  
  Connected
  Error 0x80070534 occurred.
  Error Description: Failed to add the source SID to the destination object's SID history.
  The error was: "No mapping between account names and security IDs was done."
  Error HelpContext: 0
  Error HelpFile   :
  Error Source	 : DSUtils.ClonePrincipal.1

I suppose this is because the script is trying to find the original user object, and isn't looking in deleted objects... Am I right?
How would I go about reassigning the SID for this user?