Hi Draken!
If not done yet in controls you'll have to assign a button to "toggle icons" [miscellanous section - if I remember it right].
Playback your ntrk, hit pause immediatly after start, toggle through the icons until they dissapear. After that, press the key you assigned for recording, unpause your playback and wait, till it's done. This creates a new ntrk file without icons. Furthermore you can change sights during that process by hitting pause - change view /angle/whatever - unpause and so on and so on....
But - there's always a but - this ntrk will only work in an exactly same configuration. In case you are going change something in your install (update/new mod etc.) affecting one of the captured objects, the ntrk might not work anymore. You should save your work by filming the screen to a mp4 file (or something to your taste). For that I use a freeware-tool named oCam; you can get it here:
https://ohsoft.net/eng/ Good luck!
Have a nice day,
BigMug