I am almost finished with the Integrate Local and Remote Data in Einstein Analytics (https://trailhead.salesforce.com/content/learn/projects/integrate-local-and-remote-data-in-einstein-analytics) project, needing only to complete the 
Prepare Your Combined Data in a Recipe (https://trailhead.salesforce.com/content/learn/projects/integrate-local-and-remote-data-in-einstein-analytics/prepare-your-combined-data-in-a-recipe) Unit.

On my first attempt, I know I am responsible for fucking things up because I accidently named the recipe "North America Sale" and Salesforce/Wave/Einstein doesn't provide adequate tools to rename this to "North America Sales"..

Rather then redo everything, I tried to be clever: I downloaded all my metadata to IntelliJ/Illuminated Cloud and then tried to make the required chantes to src/wave/North_America_Sales.wdpr, but I couldn't upload the results because
 

23:41	Deployment Failed
			ERROR deploying WaveRecipe wave/North_America_Sales.wdpr: A Recipe must specify a Dataflow
			

23:41	Deployment Complete: Deployed 0/1 components to DTCElectronics in 1 s 311 ms with status FAILED.

After struggling for some time to find a way to make this deployment work, I eventually conceded it may be faster to just recreate the recipe.

So, I deleted the "North America Sale" receipe from Einstein Analytics and did it again, being extra careful to name it ""North America Sales".

However, now when I click "Verify step to earn 100 points", the result is:
 

Step not yet complete in bmk@dtc.de
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: PFJYMSYV

What is going wrong?
Is there any way I can get this to work without starting from scratch?
If so, how?

Thanks,
-Brian.
 

I'm stuck on step #2 of Einstein Analytics and Discovery Insights Specialist superbadge.  I'm getting this warning while checking the challenge:

The step "Churn Tenure' is in compact form, so the filter values need to be specifed as a minimum and maximum
The static step that feeds has the following the value:
 

"Tenure_Length": {
                "broadcastFacet": false,
                "label": "Tenure Length",
                "selectMode": "single",
                "type": "staticflex",
                "values": [
                    {
                        "display": "High Risk",
                        "value": "1 to 12 months",
                        "min": 1,
                        "max": 12
                    },
                    ...
                ]
            }

I'm using selection binding for min and max values.  The dashboard is correctly filtering:


Any ideas? 
I've tried a non-compact form step where I inject a saql fragment into the query, as well as where I inject min/max values using a range filter serialization...All these efforts end in the same challenge failure message.

Any help/suggesitions are welcome!