I've come looking for help regarding this issue. I'm a teacher, and am trying to help my students get all their documents together for university applications. Google Sheets tell me that I'm not able to filter cells containing vertical merges, but I want to filter by the earliest application deadline (column G) so I know which student I have to chase up first, second, third, etc., without losing the rest of the data in the row.
Does anyone know a good way of doing this? I've created a sample of my spreadsheet: here.
Thanks in advance.
Necessary Documentand use the solution that @doubleunary has proposed. - fullfine