I have set reservation methods on all inventory operations to manually. 

Still, if a Manufacturing Order is completed (out of order). The next delivery order in line reserves the product that was produced from that MO.

This causes some major issues in my Lot/Serial tracked products if the plant selects the wrong MO. I have a handful of automation rules running to keep that Lot # linked to the Sale Order, Invoice, ect.

I have a support ticket in now. But, I was hoping that someone could point me to something I'm missing.

I've tried messing with automation rules to grab this produced qty and reserve it to the delivery order associated with the MO, but I think the easiest solution would be to create a UserError if an MO is selected out of order.

https://drive.google.com/file/d/1fPKJv1PyBGyOcUMH_EXzM9FnRzO9RBCv/view?usp=sharing
Odoo 18.0 online