With Grove Bags the moisture level going in is within 1 or 2 % of where it will STAY. The buds need to be right at 60% when they go in the bag.
Also remember to only fill them to ~75% capacity for an optimal cure.
You may want to look over the thread I started a while back.
There is a lot of great info on there about just how the bags work and how the manufacturer suggests using them.