Payment Batch total amount updated after voiding one payment from the batch

Hello,

Here is our case:

Day 1: a payment batch is done for a total of 17 payments equal to 222257.11€

The file is sent to the bank and debited on the bank account

Day 10: one of the payment of this batch is returned, equal to 8570.52€

This payment is voided.

=> when querying again the payment batch through the payment manager, the total amount has been updated and is now equal to 222257.11-8570.52 = 213695.59€

But, in the detail of the batch, I can still see all the 17 payments.

This is really disturbing, and I don't understand why the batch amount is updated. Indeed, the batch should remain as done initially.