Ok, here is the issue, I have tried to update a Pricelist from a exported CSV from Openerp v7.

But when trying to import the file I get this error:

warning -- ValidateError Error occurred while validating the field(s) date_start,date_end: You cannot have 2 pricelist versions that overlap!

Im trying a template that goes like:

id currency_id/id
name
type
version_id/items_id/id version_id/items_id/base
version_id/items_id/min_quantity
version_id/items_id/sequence
version_id/name version_id/items_id/product_tmpl_id version_id/items_id/product_id
version_id/items_id/price_surcharge

On the other hand, about the date issue, in the openerp book states that leaving the dates on blank will make the pricelists like "forever".

I don't understand how every pricelist work. I have created a pricelist for every shop I have, then I want to upload all the prices for every item. Every item is the same on every shop, how the pricelists versions affects to this? Do I need a rule for every item inside a pricelist?

Thanks in advanced...