I found the answer right here in this portal I'll share what I learned.
1. Load the dropdown and sort it. - Distinct(Sort(OptrackInventoryForms_RestockLevels_qtys,WAREHOUSE),Upper(WAREHOUSE))
2. Insert a label on the form. Set the label equal to the column you need from your data source. Such as Parent.Default
3. On your dropdown make it's default property equal to the label control.
4. Put the dropdown on top of the label and the label send to back.
5. You now have a populated dropdown and the selected warehouse from the currently selected record highlighted.
Thanks y'all.