Hi there, @nssimpson.
Thanks for joining this thread. I appreciate your time to share your feedback about updating customer's information in QuickBooks Online.
I hear you realize the importance that this can have on your business. Sending your feedback online is a big help for us to determine the features that need to be added to our product. At this time, I'll do my part and raise this concern to our Developers so this will be taken care of.
Please know that the Community is always here if you need assistance with QuickBooks. We're always here to help. Wishing you and your business continued success.
