I just updated Cypress form 6.0.1 to 6.1.2 and CMS155 has changed. 

Previously (I presume correctly) the PopulationSet 2 and PopulationSet 3 NUMER had 0 values, but now they have 5 and 2 respectively.

However, the NUMER in both cases requires relevantDatetime to be set:

define "Numerator 2":
exists ["Intervention, Performed": "Counseling for Nutrition"] NutritionCounseling
where NutritionCounseling.relevantDatetime during "Measurement Period"

define "Numerator 3":
exists ["Intervention, Performed": "Counseling for Physical Activity"] ActivityCounseling
where ActivityCounseling.relevantDatetime during "Measurement Period"

I think the relevantDatetime is only set in two instances of intervention performed (one nutrition counseling and one physical activity counseling, and the rest of the cases have both high and low like this:

<effectiveTime><low value='20210501163000'/><high value='20210501164500'/></effectiveTime>

It appears to me the expected numer should be 1 in both of these cases.