You do not need to give up custody of your children. Since you said that you're married and that your children live with your ex-wife, I assume that you're divorced and remarried. The regualtion does not say anything about your current spouse having to be the mother of your children. According to the regulation, Prior service soldiers can have as many children as they want, as long as they are married. You will not need an additional waiver for your children.
-VTguard
SFC Anthony Fletcher
Operations NCO
86th IBCT (MTN)