List of connected boards

Would like a list of connected boards and their connections; when changing a board or updating to a new combined board, need to be able to go back and connect the new board to the previous locations.

For example, combining boards 1 - 5, each board 1 - 5 was tied to other boards - need to replace all previous locations with the new combined board. Want to ensure that no connection is missed and having a list of all connections would ensure that the replacement connection is successful.