Bought a new Topcase, but did not include Keyboard/Track Pad Board

Hey everyone,

I am attempting to fix a late 2020 MacBook Air that had water damage. After opening the device and inspecting, I figured the keyboard and trackpad had too much corrosion and should be replaced.

I purchased the trackpad and a Topcase. While moving items from the damaged Mac to the new Topcase I realized the top case did not have the "daughter board" that connects to the keyboard. Am I able to remove it from my previous laptop or will I need to purchase another board?

Thanks!