You've provided a file, which has different tag types implemented.
There is an APE Tag containing name=value pairs:
This APE tag type has priority over all other tag types (in Mp3tag).
So this hides other Tag types, which might be included in the file too.
There is an ID3v2.3 Tag containing name=value pairs:
UNSYNCEDLYRICS:'||All at once,U+000DU+000AI finally took a moment and I'm realizing ... ... [Words and Music by Michael Masser and Jeffrey Osborne]'
There is an ID3v1 Tag containing name=value pairs:
Title:'All At Once'
Comment:'° §uehime's ¶roduction® °'
You can read each Tag separately by setting an unique Read option in Mp3tag Tags/Mpeg options.
If the Read option from the APE Tag type is set together with other Tag types, then the APE Tag type has the priority over all other Tag types.
A good way to go would be ...
The goal is: Remove the APE Tag completely, ever.
If necessary, prior to the remove, you can save the ReplayGain values from the APE Tag to the ID3v2 Tag.
A few days ago there was published a work instruction here in the forum.
Feature Request: Delete (and copy between) certain types of tags (ID3v1, APE)
If the other APE tagging ReplayGain calculator application had made permanent gain changes to the file, then you have to reverse this process first. Run the ReplayGain UnDo process offered by the other application.
Afterwards use Mp3tag to cut the APE Tag away.
Then use foobar2000 to add new ReplayGain values to the file into the ID3v2 Tag.
Copy the ID3v1 Tag values to the related tag fields into the ID3v2 Tag, if needed, e. g. for later online research.
Remove the ID3v1 Tag, because on modern player devices the ID3v1 Tag type has no relevance.
Apply only ID3v2 Tag to your files.
If you want to have compatibility with Windows Explorer property dialog, then use ID3v2.3 UTF-16 as your standard tagging type.