Documents that are created in Google Drive (Google Docs, Google Sheets, Google Slides, Google Forms, etc...) may lose features if they are moved from Google Drive into a different storage solution, such as Box. One observed discrepancy between Google document files stored on Box versus Google Drive is the inability to embed audio files in the documents stored on Box.
In order to take advantage of all the features available for the various document types in Google Drive, you should continue to store them within Google Drive. Moving documents outside Google Drive requires translations that may disable certain features or prevent you from being able to edit your documents.