Enter Dashboard settings.
Proceed to 'Products' section in settings
Prepare the file for import that must contain the following information:
SKU (product ID), MAP, InStock (exact format)
Step 0. When the file is ready to press Import/Export in the top right corner and select Import products
Step 1. In appeared dialogue window select: Update existing products, Load prices, format: Excel
Step 2. Select: by SKU
Step 3. Select file for upload
Step 4. From the drop up menu select appropriate type of each column
Click Preview products. Notice that we don’t need the data from column 3 and 4 select ignore.
You do it anytime the Column is not relevant.
Step 5. You will see how many products will be updated
Wait for the message about import success. Congratulations! The MAP update is done!