I was 9 sleeping over at my grandmom's for the weekend when my mom phoned to let me know they did for "income" reasons. Maybe a month later, I was waving goodbye to my mom as she was heading for New York to start a new life without me and my little brother who was now living at my aunt's house. My dad and I moved in with my grandmom.
I never saw any arguing but, looking back at how I turned out, I say it was just fine.
So, yeah, I remember it all...from a 9 year olds perspective.