We have seen the same result for multiple data pools. We are using our production ARD 126.96.36.199 environment. After exporting the Test Cases to ALM, we noticed the ADG Link file is missing the 'PublishVariables', even though the mappings were set up. If we go back to the model in ARD, we also see the model was modified after the export ran, and the 'Make System Data' view the 'Publish Variables' have been removed.
Release : 3.1
Component : CA Agile Requirements Designer