audio clips don't have fade triangles in top corner's

Help pls! After recording audio, cutting and pasting…some boxes don’t have the fade triangle’s in the top corner’s.
The affected audio sections seem to have what looks like a line/or space, all the way along the top and bottom of the clip ( Above and below the wave line )
Only some sections are affected. The audio clip’s without these line’s have the fade triangle’s, and work perfectly! Any idea’s pls

I guess you have glued some events together to audio parts. audio parts don’t have the fader handle, because they contain several events. You can open the parts with a double click and work on the events inside the audio part editor, or you can split your audio parts back to events.

thanks very much for the quick reply. It makes perfect sense now you’ve suggested it, I’ll try it out shortly.