Flex Package Subscription Summary

Hello!

We are utilizing flex packages for a create-your-own option for the first time this year. We want to utilize the subscription summary, as we use this for custom reports. However, we are finding that the subscription summary will not populate for the flex package. Does anyone know if there is a way to get the subscription summary to allow us to populate the season, status and type fields? Or is this function turned off completely for certain types of packages? Has anyone found a work around? 

Thanks!

Kim