Bulk uploads, updates and short term promotions.

Maybe I am missing something but is it possible to bulk-upload product definitions into MarketPress?

If it is, it would be a great help because even 100 products takes some time to set up. I include uploading the images, prices, sale price, stock level, SKU, URL for downloadables etc etc. 1000 items begins to be a week’s work of clicking.

Also updating present information so that, if the product already exists, the old one is archived (rather than trashed) and a new one added.

Add also an expiry date so that sales promotions could be prepared, uploaded and stopped.