you should be looking at the termcap file that comes with filepro, not SCO. it us in the fp directory - compare the contents of that to whatever you are setting $TERM and/or $PFTERM to.
ideally though you should upgrade to a supported version (5.7 is current) as there are other bugs/known issues you'll come across that have long since been fixed, nevermind the new features you can take advantage of.