Diki,
Jaap's 'discovery' eliminates the limitation on T4 of being unable to record more than 2 stereo tracks. He found each take/track is stored on the internal T4 HDD and can make use of them.
DAW software has many (complex) features and not every musician is able to use it. I'm using external sequencer/daw software since the mid-eighties and can afford professional audio devices, so I won't use the T4 recorder.

Jaap has no pro-audio interface, but now is able to digital multitrack.... please try to be happy for him (and many others)