Detecting a 'Partial' update (EG: 'Mark Completed')

Is there a built in way to detect a partial update?  For example, a task that is a child of a customer has the 'Mark Completed' link - if you click this link AfterSubmit EU scripts fire, but the record has 2 (maybe a few more) fields:[LIST=1]
[*]id
[*]status[/LIST]I've had to add some (ugly) code to determine when an update is from the 'Mark Completed' click and load the whole record.  Here is the code:

//  If the user clicks the 'Mark Completed' link it appears that the  //  entire record isn't submitted (makes sense) - however this breaks  //  our AutoMgr system.  We need to detect this and load the full   //  record to pass along to the system.  //  //  We can check for this by determining if some fields that   //  shouldn't be null are null.  var record = nlapiGetNewRecord();    if(nlapiGetNewRecord().getFieldValue('title') == null &&      nlapiGetNewRecord().getFieldValue('assigned') == null)  {      log('detected partial record update, loading full record for automation purposes');      record = nlapiLoadRecord(REC_IDS.TASK, record.getId());  }    var mgr = new AutoMgr();  mgr.Process(record);