This is something I noticed in version 8 of Directory Opus and (for me) it is still present in version 9. Everytime I upgrade Directory Opus the setting for Directory Opus being launched on startup is lost and I have to re-enable it again.
Has anyone else experienced this?
It's intentional I think - someone did tell me why, but I can't remember the reason offhand.
Intentional, how can that be, surely the user should make that decision? 
As I said, there was a reason mentioned to me ages ago - something in the installer did it - dunno - it's hardly a big drama anyway.
Doesn't get reset for me, FWIW.