The component's FOIA office shall preserve all correspondence relating to the requests it receives under this subpart, and all records processed pursuant to such requests, until such time as the destruction of such correspondence and records is authorized pursuant to title 44 of the United States Code or the General Records Schedule 4.2 of the National Archives and Records Administration (NARA). Under no circumstances shall records be sent to a Federal Records Center, transferred to the permanent custody of NARA, or destroyed while they are the subject of a pending request, appeal, or civil action under the FOIA.