Pinch has a constant sync with your invoice system. If you sync with Xero and QuickBooks, the sync is near real-time. If you use MYOB or DEAR then the sync happens generally each hour.
The recommended approach for all systems is to make the edits in your invoice system and the changes will automatically push through to Pinch.
If you have made the change in your invoice system and Pinch still isn't showing the new details, you may need to perform a manual sync. You can do this from every page in the Pinch portal at the top right of the page.
In the example below, we have a connection to DEAR, so the button shows:
If after performing a manual sync the customer details have not changed, please contact us for further support.