You can change the source marketplace that your target marketplaces are synchronised from
by following these steps:
Follow the steps in Remove a connection using Build
International Listings to remove connections for all target marketplaces.
This may take up to 4 hours for each marketplace from the time you initiated the
request. You will receive an e-mail when each removal request is complete. To avoid
processing errors, please wait until all removal requests are complete before
creating new connections.