Eric Stevens
The water is muddied by the several applications which make use of a sidecar file of some kind to preserve a list of edits which are only executed when the image file is exported from the editing environment. Modifying a sidecar file by deleting an editing process from it does not make that process reversible. It merely makes that process asthough it never was.

Savageduck
If you make the adjustments in Photoshop with a non-destructive workflow there is no use of sidecar files or catalog entries as in Lightroom.

Eric Stevens
True, but this has nothing to do with whether a process is reversible or not.

Sandman
Of course it does. Non-destructive adjustments means they are reversible.

Eric Stevens
Not in the strictly technical sense in which Floyd was using the term.

Sandman
A tip for the future - whenever Floyd says anything, it's a safe bet to assume the exact opposite is true.

Eric Stevens
Not so, I'm afraid.