Tagged purchases becoming untagged

Hello,

I have just noticed that on my dashboard that it is saying I owe an amount. When I click on this it shows some overdue payments. These payments date back to 2013 and have become untagged on the 5th January 2015, which is when I inputted my last VAT quarter information. I can think of no reason why I would have untagged them. Would appreciate some help as trying to sort out my tax return and I am worried that they will have some affect.

Thanks

If you drill down on the invoices and view their event logs it should lend a clue. Most likely the underlying payments were deleted from the bank.