So when I'm trying to go from working on-line to off-line the file that I download is .quest and not .alex can you please fix this or add the Attributes tab to On-line

This looks like a Quest question.

The .aslx file is editable; it's just your game. The .quest file is created by publishing the game, and includes the current version of all the libraries you used as well.

If you download a published Quest game from its game page, you will get the .quest file, because that's the one a player needs to download so they can play it offline.

If you go to the My Games list and click the download link under each game on the "Edit" tab, that will give you the ASLX file.