there doesn't seem to be anyway to import ship to addresses when importing sales invoices, i know we can create a business partner ship to address and use it for importing but we have different addresses per job.
In the header data file use the field Address 2, for the ship to information.
Put the entire address (street, city, state..) in the same column since there are no separate field in the marketing documents.
the address2 field doesn't appear for input in the dtw when i try to enter a ship to in the address of the dtw it shows up as the bill to n&a
the default template doenst include the Address 2, but you can add it either by just adding a column in your data file and then map the column to the address 2 field, during the import, or you can use the Maintain Interface to add the field to the interface...
do it from the Advance menu, Maintain interface. expand the sales invoice object header, right click one of the fields and choose Add Field. the address 2 will appear on the right side towords the end of the list.