Imported comics take up double the space

I just purchased Panels 3 and am loving the app! The only issue I noticed is all the .cbr files I’ve imported from my OneDrive seem to take up double the space. I have a 5GB file (big omnibus) and after importing it goes into both the On My iPad folder and Documents folder. If I delete it from one place it deletes from the other as well. Going into settings and looking at how much space is being used it says 10GB. Is there a way to import without it taking up double the space?

Can you send us some screenshots so we can understand the problem better?

I’m not sure I understand where the file is being stored and where you see the space being used.