I am using the QuickBooks PHP DevKit. I tried the xml below but it only replaces the existing ship to address
<?xml version="1.0" encoding="utf-8"?>
<?qbxml version="2.0"?>
<QBXML>
<QBXMLMsgsRq onError="stopOnError">
<CustomerModRq requestID="IDhere">
<CustomerMod>
<ListID>123456</ListID>
<EditSequence>1424079129</EditSequence>
<ShipAddress>
<Addr1>Line 1 here</Addr1>
<Addr2>Line 2 here</Addr2>
<City>City</City>
<State>Province</State>
<PostalCode>1223</PostalCode>
<Country>Philippines</Country>
</ShipAddress>
</CustomerMod>
</CustomerModRq>
</QBXMLMsgsRq>
</QBXML>
I also tried adding the original ship address to (2 tags) but to no avail.
Thanks!