Send again changing data of a attachment

Often ‘Send Again’ is used to correct an Email and send data corrected.

But if I have an attachment (for example a xls file), sending first time I can correct it, but not sending again.
Is not possible in K9Mail but in GMail is possible.
Is it possible to do this somehow?

What K-9 Mail version are you using? Can you describe in more detail what you’re trying to do?

Using K-9 Mail 5.806, when I open a message containing attachments and select “Edit as new message”, the compose screen will open as expected. The attachments from the original message are there. Removing existing attachments and adding new ones works fine for me. What functionality exactly is not working for you?