Accumulation not working as expected. Getting line chart for the future Order dates

[dhasharadh]

Hi All, requirement is to show the Order executions in accumulation for the current month which is Jan 2022. But am getting extra dates greater than today. 

Dim :  Round(Order_Date - Monthend(Order_Date),1)

Exp 1 : Jan 2022 : 

Count({<  Churn_Date = {*} ,Order_Year_Month = { $(=Date(MonthStart(Today()),'YYYYMM')) } >} Source_Id)

Exp 2 : Dec 2021 : 

Count({<  Churn_Date = {*} ,Order_Year_Month = { $(=Date(MonthStart(Today(),-1),'YYYYMM')) } >} Source_Id)

Exp 3 : Jan 2021 : 

Count({<  Churn_Date = {*} ,Order_Year_Month = { $(=Date(MonthStart(Today(),-12),'YYYYMM')) } >} Source_Id)

Full accumulation, with step 6... if I Use full accumulation with no step then my 2022 Jan line is straight line till the end.

expectation is  (last loaded date) 9 - 31(monthend) = -21, current month line chart should stop here it self. but it is going till -14. Please help

@sunny_talwar @Anil_Babu_Samineni @jagan @marcus_sommer @Jonathan_Dienst @Clever_Anjos  

@Michael_Tarallo any other expert please provide the inputs.

attaching the sample data. 

Findings : when we only keep Jan 2022 expression, then x axis is limited to -20 only. and when we add all the expressions