The template character itself isn’t edited all that often, most of the changes from version to version are in the c++ side of things.
You can pick a choose a few things from the blueprint character to port over, the only recent changes I can think of are using the new MovementAction system for teleports instead of an RPC, and changing / cleaning up the overlap / tracing function for grips.
Everything else is in the automatic update (source changes) where you don’t have to do anything except compile the new version.