The Mapped Resource Summary of the fitter report for a 9500XL design states that only xx/yy pins have been used. In actuality, my design uses many more pins.
The problem affects only the Mapped Resource Summary of the text fitter report. All Inputs, Global Signals and Outputs are correctly reported in the Global Control Resources and Summary of Mapped Logic sections of the fitter report. This problem is not exhibited in the HTML report.