Hi,
Just wondering if anyone has noticed this issue.
Adding a filter barrier when tracing across tiers doesn't show any selection and trace tool suggests "Trace Completed"
Trace without filter barrier - Runs fine. Selection returned.

Trace with a filter barrier - No selection. I have also tested other result types connectivity and aggregated geometry but they contain nothing either.

Trace with a filter barrier within same tier - Works as expected.

In terms of testing -
I have tried this on a local mobile gdb and this issue does not show up.
