Dameware across multiple domains DOMAIN1 & DOMAIN2

Hello,

I have the same problem that explain in this URL:
http://thwack.solarwinds.com/thread/55814
"
I try to manage a workstation in domain 1 with an account of DOMAIN2
I added a group ( my account is member of it) of Domain2 to the local admins built in group in AD for domain1.
I
I do not have control and i am in view mode only with invitation logon


If i added the Domain2 domain account to the LOCAL Administrators group of a PC in Domain1, i's work !.

Thanks you.
Regards