Use the Import BITS workflow action to transform BITS XML into Content XML.
|Click the Choose File icon to choose the BITS XML file to be transformed.
|Enter the filename for the Content XML file that will be generated. For example, output-1.cxml
|Click the Choose File icon to choose the XZIP file containing the XSLT that will handle the transformation.
|Pretty print output
|Select the Pretty print output checkbox if you want the output to be pretty-printed. Pretty print output is deselected by default, which means the XML will pass through exactly as it came in. If Pretty print output is selected, then the output XML will be indented, and a whiteSpaceMode of strict applied.
Click the Lightning bolt icon to add workflow variables (such as today's date) in the Input, Output, and Resources fields.