The team can enter/play U-19 State Cup in Spring with the U-19 players on the roster, or U-18 State Cup in Fall without. But, it can only play in one or the other (a team can only play one State Cup in a given year).

I think last year was the first year SCYSA expanded U-18 to U-18/U-19 to give some of those teams an opportunity to play in a state league, and I was expecting to see some of those teams from last year enter U-19 Cup last Spring given Southern Regionals were in Greenville.