I need to find a way to enhance the admin products grid with capability to fill in the SKU field more than one reference.
For example, get copy/paste from an Excel list multiple sku and get the matching list on Magento.
I've already a solution in place based on default grid block rewriting but there is a conflict with a new cleaner extension I want to use with (Enhanced Admin Grids from Magento connect).
What is the best way to achieve this? Rewriting how the default sku field is working or adding a new custom one?