How to Edit an attachment instead of always adding a new one using iPhone/iPad app.

How to Edit an attachment instead of always adding a new one using iPhone/iPad app.

In the iPad app, when you take an attachment related to an account and you send it to another app to edit it and then you edit it.  If you send it back to Zoho, it attaches it as a new attachment.  Is there a way to overwrite the current attachment rather than creating a new attachment instead?

Thanks!

Craig