Stacked bar + line chart doesn't stack

Hi all,

I'm trying to create a stacked bar + line chart that shows revenue amounts as bars broken out by revenue type, and the line as a count of contracts signed / won.

I've used beast modes to break down the revenue amounts into different columns by type and use that as series. However, no matter how I set this up, the revenue amounts won't stack but instead display as adjacent columns, each with the same period on x axis. It sometimes stacks briefly but then goes back to the wrong display when saving the chart. Any ideas on how to fix?