<< But I'm sure it's my fault. Would you be so nice to nudge me into the right direction? Once you have an APT, how do you go back to its original RT status? Because that is the whole point: once you have a APT, or a transposed APT, is there a way to revert it to its original RT status? >>

It's not really a fault but just inexperience with a little known but very powerful option. So, how do you turn your steak back into a side of beef as MoultiPass asks? Here's the way to revert an APF to its original RT status:

RT click on the track to reveal the drop down menu
From the drop down menu, select and click Track Actions\Kill Audio and OK out of the window
The APF and orange color will disappear and the original RT will display
Click generate/play button to generate a new RealTrack -- The track is blank at this point so, play will not generate a new track. Generate/Play button (F4) is required.

BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.