Thanks Richard Herbert, for your vote of confidence… 
@Billow - yes, that is what happens when you use the Glue Tool on Events. You turn the glued Events into an Audio Part, that contains the Events. Double-click on this to open the Audio Part editor (not the Sample Editor), where you can do all sorts of editing on the individual events inside the Part.
If you want to merge (glue) things together and keep them as Events, then use Range Selection to cover the whole of the events/length you want to create and then Audio ->Bounce Selection. This will result in one new Event being made (on which you can use those fade handles). You’ll be able to choose to ‘Replace’ the range in your live project, or ‘No’ to just make a new file that appears in the Pool only, that you may want to use for other purposes. This way, it’ll leave your original range selection intact in the project.
The manual is your friend… 
Just saying…
Bob