How does the application work at a high level, what rights does the family member receive, how long does the status last, and how can it become independent or longer-term where officially stated?
Conversion to a probationary permanent resident visa involves CRU pre-screening, a hearing, image and fingerprint capture with ACR I-Card application, and passport submission for implementation if approved; a Chinese national holding the probationary non-quota immigrant visa, valid for one (1) year, may then apply for amendment of that probationary visa under MO MCL-07-021. The official source does not state the rights attached to the status or the outcome of the amendment.
See recorded sources
Limits of the record- The rights attached to the status and the outcome of the amendment (e.g. permanent status) are not stated explicitly.