Why don't saved EQ Presets update globally when changed?

Yes, some way to do global edits to audio is really needed in FCP. I use an adjustment layer to apply global visual modification to all video clips, it would be great if something like that existed for audio.

Okay, but, audio roles aren't really helping me make global changes to audio because there's no way to quickly select all the audio of a particular role so I can remove and then re-add an EQ setting to all of them. What complicates things is that I'm using synchronized clips and compound clips in my timeline, so, the audio is in various places.

Making things more complicated is that there are two audio tracks for synchronized clips when you double-click on them. The audio track that came with the video is tagged as Dialogue-1, but the separate audio track (the one I actually want to hear) is tagged as some weird <Blank>-2 & <Blank>-1 role. If I view them in audio lanes, I can multi-select all those Blank roles, but, there's no way to change them all to a different role. I have to instead go into each synchronized clip and change each one individually. Is there really no way to do this in bulk in FCP?

I have to do the same for compound clips, which also contain synchronized clips. So that means I have to dig 2 levels deep for the over 100 video clips in my timeline to change audio roles. There's got to be an easier way. Also, why does the audio for compound clips appear in a more generic Dialogue lane instead of Dialogue-1? I'm so confused.

I also don't understand why the audio for two different clips is in different audio lanes when the audio is tagged in exactly the same way in both clips.

There are two clips in the above screen cap side-by-side. Both are synchronized clips, and the audio for both is tagged in the exact same way: audio that came with the video uses the Dialogue-1 role, separate audio uses the Imported Dialog role. Why does the audio for the left clip appear in the Imported Dialog lane, but the audio for the clip on the right appear in the Dialogue-1 lane when they are both set up the exact same way with audio roles?

When I select all the audio clips in the Dialoge-1 audio lane, I'm not able to do anything to them and see this in the inspector instead:

How do you select clips with specific audio roles from the Timeline index? Will selecting them that way let me update all audio clips with a new EQ effect?