https://github.com/postgrespro/pg_probackup/blob/7792b98a998706ca5e6fb203e1b07384eec6d9cc/src/merge.c#L339-L341 what if we rewrite it as if(full_backup->status == BACKUP_STATUS_MERGED && dest_backup->start_time != full_backup->merge_dest_backup) ......