full_search by date_modified not returning all project objects

[hustontrevor]

I'm attempting full_search(connection=source_conn, project=prj, date_modified='>=2023-09-01')

and getting an error:
mstrio.helpers.IServerError: Please specify at least one object search criteria; code: 'ERR006', ticket_id: '74833ec637994b918eca2c21257305bc'

When I try full_search(connection=source_conn, project=prj, name='', date_modified='>=2023-09-01') I am getting about half as many results as I do in Developer.

What is the correct way to search for all recently updated objects??

[hustontrevor]

Nevermind (I hope). I upgraded mstrio-py and the search with name='' is returning the correct results.