Hi Susan,
The tax status on the shipping address (which is a new field and not previously available) will always override whatever is set on the customer master, and currently it cannot be left blank - otherwise it will default as zero.
In order to have the same tax status for all shipping addresses as for the customer, you would need to change the tax status on the shipping addresses - perhaps using the Import Contact/Shipto function would be quickest.
I tested the conversion of Receivables data from 81A to 90A and it properly set the tax status of the ship-to address to that of the customer. So only new ship-to addresses would be affected, and you need to ensure that the correct status is set on the ship-to.
_________________________
Regards,
Softrak Tech Support