ImportRange位于已存在范围的底部

I'm working on a project where I'm trying to get a sheet to autoupdate with info from a new sheet every day in order to form a weekly aggregate of data. The new sheet will be dropped in the same folder and will be given the same name every day. Currently the process works, when I drop a new sheet into the folder it gets the Key Id and imports the new unique data from said sheet.I'm working on a project where I'm trying to ge