Well my understanding Schizoaffective bipolar is when you have psychotic symptoms outside of mood symptoms. With bipolar psychosis you only have psychotic symptoms during a mood cycle like during mania.
I was diagnosed with Schizoaffective but since I've been off meds for so long it's all leveled out into mood cycles so I really don't see a difference at all. I would probably be re-diagnosed with bipolar psychosis if I saw a doctor at this point.
Also mood swings can be caused by other mood disorders too, just sayin. the system is not perfect. it's really all a ********e mess.