No Records Display in List

Hi,

We just upgraded our sandbox environment from 4.6C to ECC6. I'm finding that no Infotype 0000 records (Actions) display when I click on the Overview icon from transaction PA20, even though I know they exist. Whether there is actually just one record or many, none of them show in the Actions Overview list. I can click the Display icon from Display HR Master Data screen and the current record displays; and then I can walk through the records using the "Next Record" button. But, the overview function does not work. Has anyone else experienced this problem?

Thanks,

Varsha.