TAX line is not creating when tax rate is ZERO

Hi

In Germany OU, we have 3 different tax rates.

1. Tax for Germany Customers - 19%
2. Tax For Intra - EU Customers - 0%
3. Tax for other countries - 0%

For 1, we are able to see Tax Line. For 2 and 3, we cant see Tax Line.

Determine Place of Supply is - Ship to, use bill to if ship to is not found

At the Customer level, we populated Tax Classification Code as well. Is there any other setup that is required so that we can see Tax Line for the above 2 scenarios?

This is upgraded from 11i to R12.

Thanks,

Siva