Robocopy between domains with a trust relationship

I've got data in my domain (domainA) which I need to copy to another domain (domainB) with which I have a two-way domain wide external AD trust.

So I have a management machine in domainA. I've got the admins in domainB to create an account for me and have given it full control to a share in domainB. On the source data in domainA I have given the account from domainB full control. Both drives mapped and I can do a manual copy between shares.

robocopy y: z: /MIR /ZB /W:5
Y: = Source
Z: = Destination

I keep getting the error:
2010/04/22 11:09:07 ERROR 5 (0x00000005) Copying File Y:\Neels.docx
Access is denied.
Waiting 0 seconds... Retrying...

I would like the NTFS permissions to be copied over also - please help. Thanks, N
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I have find this: In my case, I started out with full control on both the source and destination shares. The problem was that Robocopy was resetting the ACL on the destination share to a null value (nobody has permission) before it began recursing subdirectories. After some quick tests, my conclusion is that Robocopy does not handle inherited permissions. Say you are copying C:\Share1 to D:\, and C:\Share1 is inheriting its permissions from the C:\ root directory, it actually has no explicit ACL. Therefore, when you copy its ACL, you are actually copying... nothing. By copying an empty ACL to your destination your permissions are removed in the first step of the copy, and all subsequent writes to the share fail with Error 5.
You can copy the inherited permissions from the folder to the files and block inheritance and after copy enable it again.

Hope this helps.
Farhan KaziSystems EngineerCommented:
Have a look at following post.

Hope this helps!
Nelesh_NAuthor Commented:
robocopy "Y:\LibFin" "Z:\LibFin" /MIR /V /LOG+:"c:\robogui.txt" /R:2 /W:2
Nelesh_NAuthor Commented:
Does a mirror delete any files on the source drive?
Farhan KaziSystems EngineerCommented:
No, but it may delete files at the destination.
If files contained in the destination do not exist in the source, they are purged.

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