How To Disable Tax Reverse Journal in Implementation of Unearned Revenue

How To Disable Tax Reverse Journal in Implementation of Unearned Revenue

Hi There, i'am start using zoho books just a week ago.. and i do some of trial and error to adjut the standard of bookkeeping in my country, and i found that if i record Retainer Invoices included with Tax.. then, if i implement the Retainer Invoice into the Invoices using the option that pop up at the Invoices that i open, it shows some notes that (If there is any tax applied to the retainer invoice, the tax will be reversed.)

My question is, am i able to turn of this kind of automation..? i dont want to reverese any of tax when i'am apply/implement the Retainer Invoices into Invoices, because it will ruin the journal and i will reverse the tax after it paid to government not when the Retainer Invoices applied to the Invoice.
 
Thank you.