When I attempt to apply the equalizer to a single clip or a single track, the changes get applied to every clip within the recording, even when it’s a multi-track recording.
When I make a change in the equalizer to a clip, then come back to that clip later to flatten it back out or make other changes, the curve flattens out visually, but the sound itself is left with the previous settings.
To apply an effect to just one audio track (or part of an audio track) you must first select where you want to apply the affect.
To select part of a track, click on the track and while holding down the mouse button, drag along the track.
When you apply the effect, it will be applied to the highlighted selection.