Testimony can be given in any case if the witness is unavailable and the testimony was given under oath.  The case ref is not important.  It is a rule of evidence that is valid and constitutional in every state in the United States.  It is considered an exception to the hearsay rule under Utah Rules of Evidence 804: http://www.utcourts.gov/resources/rules/ure/0804.htmHere are other relevant rules of evidence:http://www.utcourts.gov/resources/rules/ure/1002.htmhttp://www.utcourts.gov/resources/rules/ure/0902.htm