What's the difference between these two ?
1, the button in the Tracks window
2. the drop drown in the Audio Edit window

1. The Tracks button allows for non destructive editing though it need more adjustments for fades, drag up/down volume levels rather than typing in with right click, you need to be able to copy sections to a new track to create up the custom drums you need as it's too hard trying to do it on the current drum track by moving or extending/shortening sections. Once a custom drum track is built and you want stems it should build the stems to match the stereo drum track. This works as every section can be extended out to the whole source file, so each section contains the whole drum source file or whole source realtrack file, you can't do this with destructive editing.
Also instantly change a guitar track from/to DI<>FX keeping the same sections.

2. The AEW drop down is destructive, this all needs to be non destructive for imported audio files same way the RealTrack edit works and in the Tracks view.

This is just all normal DAW stuff.

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