Your appointment as guardian or conservator lasts until the court terminates your appointment. You may resign, and the court will appoint another guardian or conservator if your ward still needs one or both. If you have been appointed both guardian and conservator, you can resign as one and not the other. Or the circumstances that justified the appointment in the first place may change so that the ward no longer needs a guardian or conservator. Changed circumstances might include such things as the ward has been adopted, has reached age 18, the ward is no longer incapacitated, or has died. Regardless of the reason to end your obligations, you retain them until the court removes you. Utah Code Sections 75-5-306 , 75-5-307 and 75-5-415.
Consult your lawyer about the proper procedures to end the appointment and turn over the estate. You must prepare a final accounting and transfer the estate to your successor, if one is appointed, or to your ward. You may need to record a copy of the order ending the appointment with the county recorder where your ward owns land to clear title to that property.