#3 - Jan. 9, 2015, 6:32 a.m.
Paragon
experience carries over. This means that the total experience you've gained in Paragon levels will be added to your existing Paragon experience for your non-Seasonal characters. Your Paragon level will be recalculated based on the new total experience.
As an example, if you're Paragon 200 with your non-Seasonal characters, and Paragon 100 with your Seasonal characters, you'll be less than Paragon 300 with your characters after the roll over, because higher Paragon levels require exponentially more experience to acquire.