Good evening,

I have many invoices which are long overdue and I do not expect them to be paid. I believe I should write them off. I did some tests and I have some questions: 

- I cannot find a way to write off several invoices together. How can I do that, instead of going one by one? 

- I noticed that when I write off an invoice, it appears as "paid" and the tax summary doesn't change. But should it decrease? 

It seems that in the end, I need to void these invoices but I would prefer to write them off since I don't want to "cancel" the invoice.