When you try to import an FBX file into Softimage 2011 Subscription Advantage Pack (SAP) from MatchMover, you get an error:

The following error(s) occured while attempting to read the FBX file:
-Corrupted or invalid file.

That’s because MatchMover exports a REALVIZ XML file instead of actual FBX.

Try using the Softimage VB Script export instead. That gives you a VBScript you can run in Softimage 2011 SAP to set up the exported tracking data.