deleting audio hidden under a slip point?

[pax-eterna]

Right, so I split a track (use scissors tool, etc)  and "delete" the audio before the split, but it's not actually deleted it's still hiding there...how do I remove it really, as in permanently?

Edited July 5, 2021 by pax-eterna

[John Vere]

Delete wrong info 

Edited July 5, 2021 by John Vere

[scook]

Apply Trimming

[pax-eterna]

4 hours ago, scook said:

Apply Trimming

Perfect, thanks Scook - haha would never have thought to search under that term!