Creating unwanted invoice while changing the accounting rules

Hi Team,

Facing an unusual issue here where incorrect invoice is issued, after switching the Accounting Rule back.

Following the steps we replicated to reproduce the issue from end user

Add a new item, line item  for e.g.1.9.

Go to via "Billing..." to the billing stream and change the correct Accounting Rule to be used.

Do a CheckQA so the contract is on status active again.

The system issues invoice xxxxx. Invoice created via receivables

Invoice 220715 is correct. Everything is fine, correct amount, correct distributed revenue ....)

Go back contract DE201658, open for Update, switch Accounting Rule to the correct rule for the next planned billing date.