Hello

You have to draft the invoice and edit the accounting date field.

Example

Before validating the invoice, the GL Date or Accounting Date can be changed at Invoice Header, Line and Distribution levels. After validating the invoice this date cannot be updated at Distribution level as the field it is grayed out.

Regards,
J Wick

one to one , but work

edit Invoice 
set the invoice in draft mode
change the date
save
publish

:)

regards