Inventory, COGS, getting it right

[Charley Tiggs <..hidden..>]

I have several questions regarding LSMB and handling of COGS and inventory.

I now know that, in order for COGS to be handled correctly, when I 
initially set up the application, I must create AP invoices to insert 
the AP invoices and pay them to make sure to handle COGS correctly. 
Unfortunately, I came to that realization too late to easily correct the 
problem.

So, my questions:

Is there a way (easy or not) to "zero out" inventory and re-insert it 
without starting all over from scratch?

Is there a way to adjust COGS so that it starts behaving correctly 
without needing to start from scratch?

Any suggestions on approach would be greatly appreciated.

Charley