@KRA,

You are correct that the edits are not saving when you send from the Outlook window from within Quickbooks. However, I was able to get them to send by opening the window in Quickbooks, then hitting SAVE - which sends a draft to Outlook. Then you need to close the Outlook window inside Quickbooks, go into your Outlook drafts folder, open the email and make your edits there. I had success making and sending changes from in there. It's some extra steps but it worked for my client.

Hope this helps!

(I do understand that this isn't a fix, but it is a workaround until the issue can be fixed by the QB team. I'm not sure why it stopped working in QB.)