Thanks for joining this conversation, @Philw1.

Like my colleague mentioned, we haven't received any reported issues about this yet. Just to verify, have you already tried the troubleshooting steps provided on this thread? If you have and the issue persists, I suggest contacting our Phone Support team to investigate why you're unable to edit the customer's billing address on an invoice.

Here's how to reach them:

1. Click the Help (question mark) icon at the upper right.
2. Select Contact Us at the bottom to connect with our support.

Keep me posted on how the call goes or should you need anything else. I'll be here for further assistance. Take care always.