Architecting and designing : XML schema design : The XML diagram : Importing/exporting schemas : Importing BizTalk schemas
  
Importing BizTalk schemas
To import BizTalk, a diagram must be open.
1 Right-click whitespace on the diagram workspace to open the Diagram menu, or click File > Import > BizTalk Compatible.
2 Browse to the directory where the BizTalk schema is; select it, and then click Open.
3 If the diagram that you are reversing into already contains a design, a dialog box appears. Click Yes to replace the current diagram contents, or No to cancel the import.
Note Parent symbol - child diagram relationships are not used during import.
See also
Importing/exporting schemas