Export Query XML Button - Filter related data?

[briananderson]

I have a form with a subform that has related data from a query in it. I'm trying to create a button that will export only the related data into an XML file. I've only been able to export the entire query (along with all the unrelated data).

My knowledge of VBA is mediocre at best, so I know I've still got a lot to work on. Any help would be wonderful. Thank you!