Automation and Reporting across forests

Automation and Reporting across forests

We manage multiple forests with ADMP.  We have users that have accounts in different forests due to acquisitions and acquired applications that run in those other forests.  is it possible to run Reporting and Automation across forests?  For example, i want to find a user who has accounts in both our primary and secondary forests and update their Employee ID with the one from their primary account in the primary forest.