RAc - That's actually somewhat of a bug. MobileSheets should not delete files if Settings->Storage->Let MobileSheets Manage my Files is unchecked, so I will fix that.
Lawrie - This is happening because of some of the processing that has to be done with abc files, because I currently can't just use them as is. If the file is encoded with something other than UTF-8 (or the character set detection returns something other than UTF-8), or it has a BOM, then I have to copy the file into the cache dir and import it from there, causing it to be imported into the storage location instead of being used from its original location. I'm going to modify the code to also allow ISO-8859-1 because I think the detector sometimes incorrectly returns that encoding when the file is actually UTF-8, because if there are no unicode characters, then either encoding would effectively be the same. So this change may resolve this issue for you with the next update.
Mike
Lawrie - This is happening because of some of the processing that has to be done with abc files, because I currently can't just use them as is. If the file is encoded with something other than UTF-8 (or the character set detection returns something other than UTF-8), or it has a BOM, then I have to copy the file into the cache dir and import it from there, causing it to be imported into the storage location instead of being used from its original location. I'm going to modify the code to also allow ISO-8859-1 because I think the detector sometimes incorrectly returns that encoding when the file is actually UTF-8, because if there are no unicode characters, then either encoding would effectively be the same. So this change may resolve this issue for you with the next update.
Mike