In Synfig version 1.4.2 I have the problem that there is no group for the tones of Papagayao.
This is the pgo file:
Papagayo is also version 1.4.2
I checked it here and version 1.2.1, 1.2.2,…, 1.3.11 worked as you expected: with automatic creation of inner layers. I still have to check why this feature was removed, but you can create them yourself in the meantime 
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Thanks a lot for help and your fast answer! 
I made it myself like you said. Unfortunately it didn’t work with saved projects.
But I have noticed: When I copied the “etc” layer into the Papagayo group right after I imported the pgo file, the other layers were created correctly.
It doesn’t work when I import the pgo file + save the sifz without layers in the pgo group, close and then loading the sifz file. For this case I have to delete the pgo file and import again and than create the layers right after.
I hope my text is understandable to show what I mean 
Oh, I got it: it complains on opening the file, right?
I found out what was wrong. I proposed a fix https://github.com/synfig/synfig/pull/2495 . It should be available in the next stable and development releases (1.4.3 and 1.5.2) 
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