(a) The state courts administrator shall provide in the electronic filing system for the creation of a system-generated legal file. The system shall allow registered users to designate documents in the trial court record for inclusion in the legal file and a legal file index. That index, which shall be filed with the appellate court, shall contain hyperlinks to the designated trial court documents.

(b) After a notice of appeal is filed, the trial court record that existed before the notice was filed shall not be altered without leave of the appellate court.