IOverrideFilter doesn't have any behavior itself; it is used as a marker for the filter pipeline processing, so the tracer for the filter itself doesn't output anything (since there are no methods on this filter interface).
Adding tracing to FilterGrouping would allow showing the effect of filter overrides in the trace output.
Comments: We discussed in triage and decided that this information is not sufficiently important for tracing. We figured that if someone is using filter overrides, they probably already know what's going on, or aren't interested. Ultimately the tracing shows the net effect of the overrides, which is the most important information.
Adding tracing to FilterGrouping would allow showing the effect of filter overrides in the trace output.
Comments: We discussed in triage and decided that this information is not sufficiently important for tracing. We figured that if someone is using filter overrides, they probably already know what's going on, or aren't interested. Ultimately the tracing shows the net effect of the overrides, which is the most important information.