Windows AD authentication in SAP BI 4.1

Hi ,
We have a BI4.1 Platform . BO 4.1 server and the services account in same domain test.domain1.com. we have AD users in another domain test.domain2.com.
There is trusting between these both the domain. So I have created group on test.domain1.com and added some users from test.domain2.com.

we have mapped AD Group in CMC – Authentication- Windows AD, now I am getting users from test.domain1.com but not getting users from test.domain2.com,
Please let us know how we can get external users from groups in BO 4.1, the same AD group is working for BO 4.0 and we are getting all AD groups user.

Thanks and Regards,
Shabnam