You do not need to remove the gutters if they are mounted to the fascia with standard gutter hanger brackets.
You still can and should have a Gutter Apron Drip Edge metal installed along the eave edges to cover the top of the fascia and direct the water into the gutter.
I don't know if Ice and Water Shield is commonly used in Tennessee, since I don't think you get much snow, but I do know you get some major ice storms.
Smart Vent gets installed per the instructions, then the Ice and Water Shield over the top of the Smart Vent, then the Starter Strip Shingles and then the Field shingles chosen.
Ed
You still can and should have a Gutter Apron Drip Edge metal installed along the eave edges to cover the top of the fascia and direct the water into the gutter.
I don't know if Ice and Water Shield is commonly used in Tennessee, since I don't think you get much snow, but I do know you get some major ice storms.
Smart Vent gets installed per the instructions, then the Ice and Water Shield over the top of the Smart Vent, then the Starter Strip Shingles and then the Field shingles chosen.
Ed