Challenge System Update Will Unlock Rotation-Locked Challenges
A challenge system update is in the works to let players earn every challenge that is currently out of reach because its mode has rotated out of matchmaking, Battlefield community manager Ganslinger43 said on Discord. The reply answered a player asking whether skins tied to Rush are now unobtainable. No details or timing were given; a fuller update is promised once the team has more to share.
"The intention is to let you earn all challenges that are currently not available due to mode rotations." — Ganslinger43, Battlefield Community Manager