Getting such a list is a HUGE pain...
It is essential to have it though, in order to examine, plan, track, etc. all the decisions made about Preferences.
Same info attached as 2 files - our original method; also using outline (not yet fully populated). Not complete but hopefully will be helpful to all. We had to create by laboriously copying / pasting from the UI.
Ideally this would be available via some type of report in Windchill, but it's essential to also be able to fill in your own decisions somehow - hence the spreadsheet.