I would try this:
PROJECT/search?DE:Project Release Date=2024-09-04T12:41:18.100Z&fields=ID,ownerID,sponsorID,DE:Project Release Date&status=CUR&status_Mod=in&OR:1:DE:Project Release Date=2024-09-04T12:41:18.100Z&OR:1:status=PLN&OR:1:status_Mod=in
the key difference is listing second status using O...