In a roundabout way I figured out how to move Evernote files into apple iOS 11 “File app”. This is what I did. I opened the “File app”, I created a new folder titled “Evernote exported files” (using the icon located in the upper left), but you don’t need to do this if you already have a file in the “File app” you already want to save your Evernote file to. I opened Evernote, I found the file that I wanted to export, Please note that this part is very important “you have to open the Evernote file.” Once the file is open, (on the upper right) there is a “share icon.” Select the share icon and you will see a icon that says “Save to Files”. Tap the icon and it will allow you to select a file you wish to save your Evernote file to, select the file you like to save it to tap “add” (on the upper right) and it will save it to that location. Pretty simple! I hope this is a help!