There is a module called "Stock by Attributes" in the free Software Add-ons section that may be your solution....
There is a module called "Stock by Attributes" in the free Software Add-ons section that may be your solution....
I have that add-on installed already, that's where I'm trying to link the different inventory types. The Right Lens-2 and the Left Lens -2 needs to pull from one category called "Lens Power" -2 which can track ALL the -2 purchases regardless of Left or Right