We can do it,
boostmyshop extension and m2e extension also not working properly.
So we suggest the custom our own script ,which will submit in amazon feeder import.
After that install m2e extension ,which will support the third part [login to view URL] you can able to track the order from the m2e and maintain the stock.
When new items or modify items then we need to submit the products to amazon using our custom script .
That is also can be automated ,but it required VPS window server
Thanks
leela