I am using Trace tool in Pro 3.0, face to UN in FGDB. There is a param "Include Content" in Trace Tool, whether check it or not, the trace result is the same. It's all the same to use downstream or upstream or connected. It's all the same to set param Output to Selection or other else.
Need other settings to exclude conent?
More infomation, another param "Include Containers" works well. The Modify Associations Pane can show all conten in Containment Tab. The Display Content Button also works well.
Thanks