How are you indicating whether the cable is "planned" or "existing"? If this is a value from a field, you could try including this field in the trace report by adding the model name "FIBERTRACEREPORTFIELD".
Another thing you could try, the trace report (like some of the other Fiber Manager reports) is formatted by an .xsl file; you could even modify this file to adjust the appearance of the report, based on the values included with the "planned" or "existing" field. You'll need to copy the modified .xsl file to each user's workstation who would be running this report, in order for them to see the report as you intend it to be formatted.
Thank you Tim, I will try it