QBO is a buggy pile of junk sometimes when it comes to basic stuff. (Invoice templates in QBO are uselelss and do not map from Word properley and this has never been fixed)

Re the address field , I have the same issue.

I created an Estimate with the correct customers address at the time.

I now want to create an invoice from the Estimate but the Customer has moved office and has a new address.

I update their customer record to reflect the new address.

I create a new Invoice from the original Estimate and boom, the old address is there.

So, why doesn't the edited customer record update so that any new invoice created from an older Estimate reflects the change or at the very least QBO should ask 'Do you want to use the old or the new address for this customer'. FFS its Accounting 101, day one basic stuff. 

And no, I don't want soft platitudes and verbose gobby language from some QBO help guru thanking me for 'reaching out'. I'm British and we don't talk like that, just fix the bloody problem as this junk costs me £25 per month and its got loads of bugs in it. If I want bugs i'll get them for free from the garden thanks.