How do you make two sets of dates enter as one in a line graph?

example.xlsx

If you look at the example and scroll down to the graph you'll see it is only calculating the first group of data towards the top. I need to add the additional deductions/gains from the second group. I'm entirely new to excel and when I tried to enter the second group of data, it split the line graph into two separate graphs, rather than totaling deductions/gains for each day.

Any advice is enormously appreciated!!!

Thanks!

Well I just made another sheet (which I will hide) mirroring the two sets of data and then sorted. I'll have to manually sort that sheet each time I enter a gain or deduction, and then select data for the graph again. The goal was to make it automatic but whatever