I'd just do:
- R (record)
- Space (Stop)
- Space (Play)
- R (record)
- Space (Stop)
- Space (Play)
- ...
How are you removing the section? If you "cut" the section, then a copy remains on the clipboard, but if you "delete" a section then it doesn't.
Yes. Update to Audacity 2.4.2: https://www.audacityteam.org/download/windows/