COGS when Inventory not tracked

[Brucanna]

Read though this topic - about half way down there is a model set up

Inventory accounting using Opening Stock + Purchases - Closing Stock

I don’t want to use Inventory items etc. I want it to be turned off but at the same time when i make a sales invoice the figure gets added to the sale and the tax goes to it’s designated account. but where is the stock getting decreased for sales and increased for purchases what steps should be taken to correct this.I should know the position of my stock after each sale or purchase. Please help.