1. How are you populating the dropdown? Is it an option set or a collection or simply a set of text values?
On change: Set(selectedvalue,First(Filter('[dbo].[BPATLoadStaging]',SourceName=Dropdown7.Selected.Result))); Dropdown 7 is the primary key drop down and source name is another dropdown that depends on dropdown 7 to populate.
Items: '[dbo].[BPATLoadStaging]'
Defaultseleteditems: selectedvalue
2. Can you provide the expression that you are using to remove the item from the dropdown?
I pretty much set the reset property on the dropdown 7 to "resetprojectcodevar" and added *update({resetprojectcodevar: true})* to the *delete row button* on select property.
The dropdown is pretty much filtering a form.