Currently using Magento API, however as we all know it's slow. Everyone says to use Magmi.
Well currently here's our situation. Twice a day we update from a csv file.
We update all matching products price/quantity If product exists in csv, but not magento we import it as a new product If product exists in magento, but not csv we set it to disabled.
Looking at the Magmi datapump API, I don't see a way to update existing products? Is there a way to update existing products via the datapump api? I only see a way to import new products. Also is there a way to mark products not in the csv, disabled in magento with Magmi?
Magmi_DataPumpFactory::getDataPumpInstance("productimport");