Profile: shoecake
I have found a link here https://www.amazon.com/gp/help/customer/display.html/?nodeId=200779220 which has some good info on how variations work.
I have also downloaded the "Home and Decor" xls filesheet which is used to upload the data. If you look on the "Data Definitions" and "Valid Values" tabs then there is lots of info on how it works.
You can get it at https://s3.amazonaws.com/seller-templates/ff/na/us/Flat.File.Home.xlsm
I've found an old spreadsheet from 2014 I used to upload a variation before and I will email it over to you now.
I am happy to upload some sample files if you need to test anything.
OK, I'll look it up and get back to you. It's fairly simple, just adding another row to the report which references the variant products.
Thanks. It is the "Amazon - Home, Home Decor, Kitchen & Garden" template.
Just to clarify, it is not grouped products in nopCommerce, but Product Attributes of a single product. I am not sure it you meant this or variations in Amazon. 
So it would be ideal for it to apear like this listing in Amazon - https://www.amazon.co.uk/dp/B00HQHBNFG But if it was seperate listings then that is OK also.
I know a variation in Amazon like above is created in the feed by a separate row for each listing and then another row to group them together.
Does the feed manager support products with product attributes? i.e export each product attribute combination as a separate product?
An example product is https://www.stitchtastic.com/store/jute-bag-medium
As you can see, this is the same item in 3 different colours. Each colour is in fact a separate product with its own SKU, GTIN and MPN. In order to import these into Amazon, I would need to import 3 separate products, i.e. 3 separate lines in the amazon feed.
Is this possible?
Using the latest release and updating the Dll, feeds.xml and google.xml has fixed the issue now. Thanks very much.
I've used the latest google.xml file and it is transforming "inStock" to "In Stock" but that is not the issue. The problem is it is transforming "Preorder" to "In Stock. It is as if the xml for the availability is being set in code and not from the data in the xml file.
I will email over some screenshots to show what I mean.
I've just taken a look at the latest download and can't find any differences to the previous version. THe file modified time of google.xml is 15/04/15
Thats great, thanks. I will be able to try this in a few days time.
I can't seem to get the availability working for the Google feed, it is always showing "in stock".
For an out of stock product, the "Stock Status" field shows Preorder, but the availability field in the export still shows "in stock"