Power BI aggregating data from one grain to overall week level / DAX Measures at a grain

I have 3 measures. Inbounds, Outbounds and Net Avail.

Net Avail = Inbounds -Outbounds.

with this I have created another measure Non-Negative Net Avail = if (Inbound- Outbound) <0 then 0 else Inbound-Outbound.

This measure works fine when I am visualizing the data at Week, SKU, NON-Negative Net Avail level. However, when I remove SKU and view data at an overall level i.e Week, NON-Negative Net Avail, instead of summing up the variances at each SKU for that week, it just looks at the overall data for the week and zeros it out only when the overall for that week is negative.

See below table- I need the result at overall level for that week to be 2172 and not -1715.

Anothere xample from Power BI below. Left chart is the one without SKU and right one contains SKU. if we look at the data for a week say 10/28/2019, chhart on left shows 13.7K and on right shows 18.3K. Attaching excel for the same

https://drive.google.com/file/d/1XxeY-j4HnTBMIVSEO0mGVVaaOhvwzvdE/view?usp=sharing