I’m importing spreadsheet file into Odoo version 13 - Community Edition, so far I managed to import most of the data needed, I just didn't accomplish to import Status/state (Quotation, Quotation Sent, Sales order and canceled) from Sales Order module.
I have already searched and found this suggestion for v12:

https://www.odoo.com/forum/help-1/question/how-to-import-sales-order-state-in-v12-ce-154248

However, I followed the previous instructions, editing sale.py file, turning 'readyonly' into false instead of 'true', and the ‘Status’ field showed up, although when I import the database still showing just the default status 'Quotation (Draft)'.

Does anyone know how I can solve this problem?

Field state modified: https://drive.google.com/open?id=1f2G2IloPKWqDaLLPkun9yY1fLifXxEYV