mudgel 
1. In the New SONAR Platinum it does toggle the folder open/close. You have to make sure that the folder you want to open or close is selected.
 
2. Haven't found a way yet but working on it
 
3. The only way I've been able to do this is to make a selection then go to the loop module in the Comman Centre and press the Loop selection icon (Shfty L) and subtract the 2 readoutd ie the beginning and end points of the selection. It sounds a lot in reading it but in practice its quite easy.
 
Sorry for taking so long but had a minute so.
 
Hope that's a bit of help

Hi Mike-
 
1. I know I was caught off guard when I closed a folder and the "active track" jumped up to the first one in Track View. I'll experiment with this more next chance.
 
2. Not a huge deal, but I could've sworn this used to be possible.  Screensets seem like the answer.
 
3. Yeah, another not huge deal, but I think I'll put in a feature request for this.
 
Thanks for this and your later response!
 
-Susan

noynekker
2. I know of no key command to open + close all folders at once, but the "up + down" arrows make the folder a "current" selection - then Alt+Shift+H toggles the folder open or closed.

Thanks, noynekker!
 
-Susan

Jlien X
1) It works fine even in X3e. Try it in the default Normal project template.
 
2) X3 introduced a bug (CWBRN-24456 )  that opens all folders which I really want fixed. You close all folders before saving a screenset, then switch to another screenset and switch back and click the open/close button of one of the folders and you'll see all folders open.

Hi Jlien-
 
1) This is with the Normal template and it's inconsistent here, but I'll investigate further.
 
2) I'll also look into the Screensets solution next chance.
 
Thanks!
 
-Susan

Try it on another project and see what happens. I have several older projects that I've since opened and use in newer versions that inherit some strange display weirdness not seen in any other projects. They're like little baby bugs since they're otherwise unreproducible.