I'm guess this is a 'feature', but I find that if multiple HANA views are used in a Design Studio based dashboard style report, where the views have effectively the same prompt, no merging of the prompts occurs because the prompt name includes the view name. For example SAPClient is the same prompt in each view, but the name in the prompt list (in properties) is 'package name'.'view name'.'prompt name'. It's not a problem with the same HANA view used multiple times. Any ideas of a workaround?