Our program recently acquired ArcGIS Notebook server but we can't transfer one our key scripting processes to it that uses ArcPy Search/Update Cursors. It appears a token is needed for every time the cursor access the data. In Jupyter Notebooks we only had to authenticate the initial data connection. This has been identified as a bug (#BUG-000140078) by Esri Support. Please support the cursor functionality in Esri Notebooks.