Show filtered records in userform

attached is my spreadsheet. Selecting a field from the first listbox fills the second listbox. Selecting from the second listbox filters the spreadsheet. How do I show only filtered records in my form? I've tried several things (you can see my mess commented out under Sub FillTextBoxes). I'd like to loop through them with the next and previous buttons, and edit and save them like I do unfiltered records.