My question is - I think I may have entered incorrectly 

I'm working with GST remittances (Refunds or Returns)

I'm doing it as a GJ entry - 3 accounts consisting of GST Collected, Paid and Cleared

Once I enter my numbers in appropriate accounts then I need to choose the "Sales tax" button - in that screen it automatically gave a negative amount in the amount subject to tax.

It has now thrown my GST off for my monthly remittances, it wont let me remove it. 

I'm new to this accounting version of sage - did not have this in the SAGE 50 version I had....

Should I be not using the Sales Tax tab ? because its more of just an entry to clean up the GST accounts and pay or receive a refund.

Or should I be able to go in and Zero the negative amount that's showing??