TOPIC: Browser Auto fill deletes default values

I am setting up an new event and I have some radio buttons that have been pre-populated. To speed up testing I am using my LastPass form fill to populate the fields. What is happening is that when it does the radio buttons that have a selected value go blank. In the case of a radio button that has a fee associated with it, that fee is then deducted from the cost and will not be replaced unless the user re-checks the radio button.

Is this a known bug or is there a workaround for tools that auto fill where I can tell the tool to disregard this field? I have tested this with the Chrome browser auto fill and it is doing the same thing.