FBA to FBM Conversions - Amazon North America Remote Fulfillment with FBA Sellers

As of September 15, 2020, Amazon has made a change to their API for remote FBA. This means that if "Push Inventory" is On in Skubana for a Listing SKU in any of the North American Amazon regions, it will be converted to FBM in Seller Central for Amazon US, Mexico, and Canada.

You can find more info here.