Hello and thanks for this module.

I don't think it is quite clear how to handle updating existing entities with this module.

There is no information on the main module page and one has to search within the documentation to find a related entry, which does not clearly state that "this is the way to do updates, period".

It seems one also has to apply a patch for this to work.

My use case is the updating of the stock value of existing product entities via CSV, with the unique field being the SKU.

Currently I cannot do any updates because the module attempts to add a new entry with an existing SKU which is not allowed. Please clarify what the official procedure for updating entities via a feed is.

Thank you