Open Purchase Orders - VAT Return

I record all my business expenses as line items in a limited number of Purchase Orders in order to minimise clutter. For example, I am recording miscellaneous travel expenses in a single PO Miscellaneous Travelling Expenses. When I have a new item, I modify the PO and add in a new line. If the particular item includes VAT, I record the details on the line item.

When I do a VAT return, will QuickFile work out what should be included from the dates on the line items, so I can just continue to use the POs? Or do I need to close them/pay them at the end of the VAT period and open new ones for the next VAT period?

Thanks.

The latter - VAT returns in QuickFile are derived from sales and purchases, not POs or estimates.

Many thanks, Ian. Much appreciated.