There's a new behaviour listed in the improvements section of the release notes.
In previous versions, extracted QVDs were prefixed with the connection name defined in the QDT. Now the user can add custom prefix text. If the prefix is not included the extracted QVD name will not be prefixed. In the case of Data Folders, if the prefix is not included, folder names will be prefixed by default to the file name.
Please pay special attention to the data folders mention since in the previous version the connection name was being used as a prefix, as a consequence of this change the files will be uploaded again using the new prefix standard and the app connection string should be updated.