Another 529 Question

[woowoo]

My current state (FL) does not provide any in-state benefits.  I'm also not inclined to invest in Florida's plan for other reasons. 
Let's say we choose the MN or MI plan, but later move to a new state like Illinois that does offer in-state benefits, could we then open and contribute instead to an Illinois plan?  

[gt7301b]

Yes, but you would only get the tax benefits on the future contributions as long as they are under the threshold. (My state cap is 4K annually)