Historical rates in consolidation

Summary:

How do you make sure that the historical rates used at base entity actually are used throughout the consolidation?

Content (please ensure you mask any confidential information):

For example USD is my reporting currency and I have share capital on a EUR holding (base entity HA). HA consolidates into HA Consolidated (parent entity HAC, also a EUR entity). When I look at share capital on HA in USD_Reporting it translates against the historical rates I inputted. But at HAC it simply translates at the default rates (average in this case, as this is the first month of data). So what is the point of using historical rates if they don't roll up into the entity structure? How could I solve this?