Questions Dashboard Parameters Aren't Filtering Data from Underlying GI

I have created a GI that exposes Gross Profit Margin % by using a weighted average formula and am now trying to expose this data via a KPI Meter Widget on my Sales Manager dashboard.

On the dashboard, I have a date range parameter set that controls and filters the data of each widget on the dashboard based on the date range input by the end user. However, for some reason, I cannot get the KPI meter widget to respond to the parameters I have set.

Regardless of the date range selected, the widget is only showing the data as exposed by the GI itself. The only thing I can think of is that the grouping on the GI is somehow preventing the parameters from taking effect.

I can add parameters to the GI itself to manipulate the data as I see fit (see screenshot below).

However, when I remove the parameters from the GI in order to allow the dashboard parameters to filter the data, the data result doesn't respond - it simply exposes whatever the GI shows.

For a little more background information, the GI is using grouping in order to accomplish a weighted average for calculating gross profit margin. Taking a standard average of GP % results in an inflated margin % result which doesn't my team accurate data. Happy to provide more details as needed. Thanks in advance for your help!.