(1) If the offense is committed either wholly or partly within the State of Illinois, venue under this Article lies in the county where the minor resides, where the alleged violation or attempted violation of State law or county or municipal ordinance occurred or in the county where the order of the court, alleged to have been violated by the minor, was made unless subsequent to the order the proceedings have been transferred to another county.
     (2) If proceedings are commenced in any county other than that of the minor’s residence, the court in which the proceedings were initiated may at any time before or after adjudication of wardship transfer the case to the county of the minor’s residence by transmitting to the court in that county an authenticated copy of the court record, including all documents, petitions and orders filed in that court, a copy of all reports prepared by the agency providing services to the minor, and the minute orders and docket entries of the court. Transfer in like manner may be made in the event of a change of residence from one county to another of a minor concerning whom proceedings are pending.