Rating doubt for Starters and Long Challenge contests


I have been participating in August Long Challenge in Div 3. Today, I want to participate in Starters as well. I had a scenario which might occur.
What if, my rating increased from 1595 to 1600+ after the Starters is over, will my participation in the Long Challenge still hold? If it crosses 1600, I would come under Div 2, but, Long Challenge is unrated for Div 2, even though, I started as Div 3 participant in the Long Challenge.
Thank you