Except for a petition for the appointment of a guardian in an emergency or issuance of a protective order limited to property located in this state under section three of this article, if a petition for the appointment of a guardian or issuance of a protective order is filed in this state and in another state and neither petition has been dismissed or withdrawn, the following rules apply:
(1) If the court in this state has jurisdiction under section two of this article, it may proceed with the case unless a court in another state acquires jurisdiction under provisions similar to said section before the appointment or issuance of the order.