The official version you would point to if asked "what did we decide?" Make sure finals are saved where others can find them, and that it is clear which version is authoritative.
The authoritative record is the version you would point to if asked 'what did we decide?'. Make sure finals are saved where others can find them rather than only in personal storage, and where several 'finals' exist, make clear which one is authoritative.
IAR turns terms like this into working practice: assets classified against your disposal authority, stewarded by position, and ready to evidence.