VAT T30 does not appear on detailed report

So we have partial exemption for VAT and use T30 for items that this could incorporate.

I want to return the irrecoverable VAT content back to the host nominal codes but need the detailed VAT report information on this tax code. IT IS NOT THERE! 

I've checked within the VAT setting and T30 is definitely correct and the tick box says it should be included on the return.

What am I  doing wrong?