My question involves estate proceedings in the state of: California, Los Angeles County

All debts and distributions to beneficiaries of my deceased father's simple, non-probated trust have been made by myself, the successor Trustee. Since L.A. County is ridiculously convoluted in its laws, I need to ask if L.A. County requires any special filings with them indicating the Trust is terminating. If so, input is appreciated. If not, any additional suggestions are welcome. Thank you.