Describe how content migration is done within WMM?
Extraction / Importing Website Migration Manager imports web pages and/or file content directly from the Source System. A record is created in Website Migration Manager for each content item with a distinct column for each metadata and content field. Mapping Migration settings are then set on WMM content items using built-in SharePoint migration configuration dialogs. When migrating to SharePoint web pages, settings are specified for the target SharePoint site, dynamic site and folder creation logic (optional), target content type, column mappings from WMM fields to SharePoint content item fields, SharePoint workflow, and associated content migration settings. These settings can be set for one or many items at a time and settings can be copied and pasted between items at any time. Migration After import and migration settings are configured, any content can be migrated to SharePoint with the click of a button.