Dashed lines showing up Solid

I'm trying to plot a set of data with fit lines that are solid for filled in data points and dashed for hollow data points, but when I run it all of the lines show up solid unless I switch it to solid lines for hollow data points, and dashed lines for filled in data points. I also tried including 'linestyle' to no avail as well as switching the colors.

subplot(1,2,2)

hold on

scatter(TDCases1(:,1),TDCases1(:,2),'k','o')%

scatter(DSCases1(:,1),DSCases1(:,2),'m','o','filled')

plot(TDCases1(:,1), f_TD,'--k')

[sortedDS, sortIds] = sort(DSCases1(:,1));

plot(sortedDS, f_DS(sortIds),'-m')

%ylim([0 aboveMax])

xlabel('Age (months)','Fontsize',14)

% ylabel(ygraphlabel,'Fontsize',14)

ylabel('Size','Fontsize',14)

hold off

title(['\fontsize{18}','S TD V DS fit - ', measureToAnalyze])

set(gca,'FontSize',14);

legend('TD','DS','Location','northwest')

set(gca,'FontSize',14);