I have a weird problem. Have been using outlook for years for business mainly e-mails. Just recently all my sent e-mails from 2017 & previous, right back to 2011 have ended up in my deleted folder. My 2018/19 sent e-mails are still in the (correct) sent folder as per normal. When I try & restore them to the sent folder they just keep returning to the deleted folder??? Have tried numerous things, nothing seems to work.....has me stumped! Can you please assist?