Does anyone know if we can still submit Enhancement Request for older Service Manager versions?

I know the new SMA solution includes Service Manager. I think it's version SM 9.5x in SMA. For SMA Enhancement Requests, it's handled by the SMA-X Idea Exchange community. What about older SM versions prior to SMA? Can we still submit ER for the older SM versions or do we need to use the SMA-X Idea Exchange community for the older SM versions too?