John Larsen

Hello, Im currently looking to migrate hundreds of clients from mb4 to whmcs. Is there any documentation regards to initial setup before doing an import? For example, do we need to setup the products with matching names so that when clients are imported they are tied to correct products? What all should be setup before starting the import? Also what about existing outstanding invoices? Is there a way to work around getting credit cards imported too? I saw a thread somewhere that it is possible. Thanks! -John