In Jellyfin, expand the context menu and "Identify". Enter the ID for 1999 One Piece from TMDB or whichever source and Jellyfin will automatically replace the 2023 metadata with the 1999 metadata.
Jellyfin 10.10.3 (Docker)
Ubuntu 24.04 LTS
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
3x WD Red Pro 6TB CMR in RAIDZ1 (JF Library)