确认:我的I-485批准后才可以为我女儿填I-824,并且那时她必须不到21周岁。还是她的年龄固定在我的I-485收件之日?
-You can file I-824 any time during your I-485 pending or after I-485 approval. Your kid's age will be frozen on the date when your I-824 is filed. So, you need to file I-824 before your child turns 21 (CSPA age).