SIR at 2 UCs

Applying to College
1

<p>I had submitted an appeal to UCLA for my undergraduate admission. Since I had not heard anything from them by May 1st, I submitted an SIR to another UC. My appeal for admission to UCLA was successful. Should I withdraw my first SIR before submitting the UCLA SIR? What is the process to withdraw? Or is it OK to submit the UCLA SIR and then send an informatory message to the first UC?</p>