analytic_account_id was a property of sale.order that I used in v16. Now my code that references that field is failing and the field is no longer part of the model.

Took me a while to find out what happened, so I'm posting here in case it helps others.

I found this good writeup on GitHub:
https://github.com/odoo/odoo/commit/238a41e35280256382f6509182b9e900fb4f7aba

Thanks deneuvillem people do read your documentation and it does help!

relates to:
project,sale,purchase,stock,mrp: analytic plans on projects