Even though bankruptcy does NOT discharge your child support or alimony obligations (Domestic Support Obligations or DSO), you are still required to list your DSO in your bankruptcy petition and give contact information for the person/entity who receives your DSO payments. This is not an obscure rule to make sure that your ex knows your business. It is designed so that if the trustee discovers that you have hidden assets, or if you have back child support due and owing, he can use any discovered assets to pay your oustanding obligations.
Unfortunately, it does tell your ex that you’ve filed bankruptcy. They will receive notice of the bk.
Here is a link to the DSO form we use here in Utah: https://www.utb.uscourts.gov/forms/domestic-support-obligation-questionnaire