I have a travel database that I need to be able to use in Access 2007. One of the forms has the information for an individual specific to a trip. I have two subforms to add and list the flights and hotels the individual will use on this specific trip. The select for the dropdowns in each of the subforms is a combo box and includes a "where tripid = forms!mainform.tripid". This works without issue in Access 2013 but as soon as I copy or import and then open in 2007 my dropdowns in the subforms don't work. The entries already made list the correct flights, times, etc. but the field that is the dropdown is blank and when I click the dropdown I get no options to select (should be flights or hotels with that tripid). The users for this system only have 2007 available to them currently so I need to come up with a fix. Do I need to start from scratch on this mainform and subforms in 2007? (Or just beg to have them updated to 2013!)