MerchantSpring now lets you upload your historical Sponsored Products campaign report.
Note: You will need to first obtain the historical campaign data from your Amazon Advertising Console.
For detailed instructions, see How to find your Amazon SP Campaign history report.
1. Log in to your MerchantSpring account and go to Marketing > Campaigns.
3. Click "Upload Campaigns"
4. In the pop-up window, select the file and click "Save"
5. Once uploaded, the data will update within 48 hours.