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There is no longer a configuration option to activate / deactivate Anglo Saxon. Instead you choose the Inventory Valuation Method.
Perpetual (at invoicing) = Anglo Saxon.

You can now assign a Stock Account for each Product Category.

For full details, please review this video:

https://youtu.be/gmlDZ0Zw6vs?t=9270
Thanks for your reply but I already checked all of that. I'd actually appreciate an answer from Odoo as it clearly is an omission in the build. I am VERY familiar with Anglo Saxon - been using it for a long time and yes, I am an Odoo 18 certified consultant in case you wondered.
Here is the v19 documentation of where to find the setting
demo.odoo.com (in debug)
This is the section it should be in according to the documentation for v19 (which in this regard is the same as it was in v18)