The process for modifying a file encrypted in BoxCryptor Volume with Mac is very simple: You just click on the file to open it + make the changes + close it and it is updated + recrypted +stored back automatically.
Why is it so clumsy on the iPad ? You have to "Open in" and then to save it back into BoxCryptor using another "Open in" .... Moreover on iOS you have to go find and delete the temporary file that is created with the file editor. This file is not encrypted, you are hence loosing all the benefit of confidentiality if you forget to do that.
But maybe its my ignorance, is there a way to do it on iPad as simply as on the Mac?