Recalculate Payroll for Retroactive Changes Single Employee - results not visible in Person Results

Summary:

Since 19C, there has been a custom task to run retro for an individual employee. This works, but the flow results are not shown in Person Results because the custom flow is not included in the "Payroll Calculation" filter.

Content (please ensure you mask any confidential information):

I have created a custom flow using the "Recalculate Payroll for Retroactive Changes Single Employee" task, nothing fancy, just that one task.

There are two issues with it:

1) Clicking into the flow once it has completed doesn't show any results, so it looks like it hasn't worked even though it has.

2) Going into Person Results, it still looks like nothing has happened. Here, the person has had a retro run for October but it isn't shown in their results: