Wis. Stat. § 821.04

The certification order shall be prepared by the certifying court, signed by the judge presiding at the hearing, and forwarded to the supreme court by the clerk of the certifying court under its official seal. The supreme court may require the original or copies of all or of any portion of the record before the certifying court to be filed with the certification order, if, in the opinion of the supreme court, the record or portion thereof may be necessary in answering the questions.