ALTER TABLE acquisition_settings
    DROP COLUMN seed_ratio,
    DROP COLUMN seed_days,
    DROP COLUMN stall_hours;

ALTER TABLE release_blocks DROP COLUMN expires_at;
DELETE FROM release_blocks WHERE reason = 'stalled';
ALTER TABLE release_blocks DROP CONSTRAINT release_blocks_reason_check;
ALTER TABLE release_blocks ADD CONSTRAINT release_blocks_reason_check
    CHECK (reason IN ('operator', 'files', 'import'));

DROP INDEX grabs_seeding_idx;
ALTER TABLE grabs
    DROP COLUMN seeding,
    DROP COLUMN ratio,
    DROP COLUMN seed_released_at;

UPDATE grabs SET end_reason = 'superseded' WHERE end_reason IN ('stalled', 'failed', 'abandoned', 'gone');
ALTER TABLE grabs DROP CONSTRAINT grabs_end_reason_check;
ALTER TABLE grabs ADD CONSTRAINT grabs_end_reason_check
    CHECK (end_reason IN ('', 'superseded', 'imported', 'refused', 'held'));

DROP TABLE download_interventions;