The training provider shall issue a certificate to staff upon completion of initial training. The certificate shall be valid so long as the certificate holder meets the requirements set forth by the authority pursuant to the Long-Term Care Facility Dementia Training Act and the certificate holder has not had a lapse of dementia- related direct care service employment for twenty-four consecutive months or more. The certificate shall be valid among long-term care facilities. Each long-term care facility and long-term care facility contractor that is subject to that act shall be responsible for maintaining documentation regarding completed dementia training and evaluation for each direct care service staff member.