Combining multiple spreadsheets in one using IMPORTRANGE

Question

I would like to aggregate the data of multiple spreadsheets into one spreadsheet.

• Spreadsheet 1 has a Row of Strings A2:A500
• Spreadsheet 2 has a Row of St

Answer 1

Easy fix: Apply the filter to the entire column / sheet instead of just the current selection. This will automatically update all of the filters to include new additions.