According to Art. 63 of the Constitution of Ukraine, convicted persons enjoy all the rights of a person and a citizen, with the exception of restrictions defined by law and established by a court verdict. Convicted persons, according to the norms of the Criminal and Executive Code of Ukraine, have the right to social security, including pensions, in accordance with the laws of Ukraine.
Therefore, your child's pension will continue to be paid. Payment of pensions to persons sentenced to restriction of liberty or deprivation of liberty for a certain period is carried out by the territorial bodies of the Pension Fund of Ukraine at the expense of the institution at the place of serving the sentence.
Please note that from the pensions of those sentenced to restriction of liberty or deprivation of liberty for a certain period of time, the costs of their maintenance in institutions of execution of punishments are reimbursed, while at least 50 percent of the pension is credited by the institution at the place of serving the sentence to the personal account of the convict.