Trend view shows single metric when multiple chosen
CA Performance Management 3.5
If the values for multiple metrics are the same then it may appear as a single line in the graph as all three lines are overlapping.
If you right click on the metrics in the legend at the bottom of a view, you can choose to hide/focus that metric in the graph. When the lines are overlapping this can be used to see the metrics. Also if you click the gear for the view and export to csv, then you can see all the metrics listed as well.