If you look at the similar column [CTXStartDataEvaluator](https://github.com/AMPATH/openmrs-module-amrsreports/blob/master/api/src/main/java/org/openmrs/module/amrsreports/reporting/data/evaluator/CtxStartDataEvaluator.java), you'll see that we report *all* start dates.  I think this is what reporting team wanted from this column too, but you can check with them to make sure.