Yep, for sure. Tell your Guide you want to do that and they'll handle it quickly.
We have an Oct UY, so less than 3 weeks before our UY resets and several months past the banking deadline, and they just banked our 2024 pts this morning from a small add-on.
And then I immediately modified an upcoming reservation to use the banked 2024 pts to free up the 2025 pts from another contract. Very easy.