Hello I have exactly the same thing happening with PLS-Cube (wanting it to revolve 10 times instead of the standard 3 times)
Edited in Hollywood FX via the 'edit' button in Studio (I am using version 10.7); which, as in your case, worked OK in the editor preview. Then, pressing 'OK' and has Not solved the case. I even 'saved-as' under a different name ('PLS-Cube10') but doesnt come up in studio under the transitions.
I am wondering if you have solvd the case and if so, how you did it. I'll also try the link in previous reply (which I couldnt work out how to send a PM on my mobile; but now on desktop)