I built a photo and video gallery using the free version.

I just updated to paid version.

I don't see where its possibly to enter license key or anything of that nature to update the plugins status as paid version. I really hope the only option is not to delete current plugin and install the new one? This means I would lose all my work. Is there a way around this? please help. thanks 

ignore me, I see the update plugin button! just installed...thanks ;)