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TMS320C6745 pin mux utility

When using the pin mux utility with the C6745, I found the following issue.  I first select the C6745.  It then grays out all the pins that are not available.  However, it does not gray out GP4[9].  From the datasheet, this pin is only available in the ZKB package and the C6745 is only available in the PTP package.  Is this a problem or do I not understand this correctly?