When a Dynamic Group resides in one child domain and its members come from a sibling child domain in the same forest, the Dynamic Group is not updated correctly.
The following error is logged in the ARS Event Viewer:

Status:
The Active Roles product team has raised Defects #708231 and Defect #708232 for this issue. A fix for this issues will be included in a future version of Active Roles.
Workaround:
NA
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