Edit previously recorded audio tracks using super-powered recorder

  android, android-ndk, audio-processing, c++, superpowered

I am using superpowered android SDK for recording audio, I am facing the below issue while editing tracks. I have recorded one track and adding a new track. after that, I am going to edit the first track and recording on it again, in this case, my previously recorded audio gets blank and it is considering as a new track, Can anyone please help me with this, Any help would be much appreciated.

Thank you.

Source: Windows Questions C++