I have a project containing a file that I sent to review (manual task). I had to send it a second time because the first review package was accidentally lost. So then I tried to delete the first review task and couldn't find a way. I tried "delete file" on the task itself, but it deleted the whole file (bravo me). Is there a way to retrieve the deleted file and put it back in my project?
Try looking inside the review package. If you unzip it (add .zip to the end of the file name) you'll find the sdlxliff files in there.