you are right, it was maybe a misstake to not name it Phoenix-recovered-demo.prg.
But i am pretty shure there will be a way to exchange the current one with the final one.
And a do not plan to release intermediate states on plus4world.
Just this demo and the final full version. I hope this will answer all your questions.
Fantastic Sorbas2020, this means I can simply upload it as Phoenix_Recovered_(preview).prg, thank you!
Can't wait for the final version, do it your very best!