I created Flow, on Screen widget I want picklist of Accounts which have opportunities, but I don't find any way to do that.
when I create record choice set on the opportunity, then I can't find Account Name on the choice label as shown in the image, so I gave AccountId,
if I give this record choice set to picklist choice on screen, it only shows record ids of account in picklist after running it.

I created a simple analytics dashboard with two different lenses of the different dataset, I connect those datasets using https://help.salesforce.com/articleView?id=bi_dashboard_data_source_connections.htm&type=0 ,
it's working Properly.

If we create a managed package with all assets like analytics app, dataflow, dataset and dashboards it creates successfully, but if we deploy it on other org for testing purposes. it showing error while deploying.
Error : 
1) (Dashboard_Name) No Dataset found for Developer Name: Dataset_Name
Dashboard_Name: No Dataset found for Developer Name: Dataset_Name
2)(Dashboard_Name) Wave Asset doesn't existing in the Org.
Dashboard_Name: Wave Asset doesn't existing in the Org.

But if we remove the given connection between dataset from all dashboard, and package it again it's getting install successfully.

but that dataset connection is necessary for my dashboards.