Currently when using dynamic query strings, if a field is a dropdown field you cannot prepopulate it on a form. This is unfortunate as we have returning customers and can populate most fields but not those that are dropdown. For instance, a client selects the state they live in from a dopdown list. When they return each year we cannot prepopulate their state and they have to answer again. This does not make a whole lot of sense to me being that we can use a personalization token for dropdown fields in emails.
Would like to see this implemented as well.