[Online version] - Upload my story to a different PC

Hi,

this is probably a dumb question, but I looked for an answer (here and in the Wiki) and couldn't find one.

I'm trying to publish to file one story I am working on at the office and have it uploaded to my laptop back at home.
I know that the info needed in order to 'see' the story are stored within the browser (Chrome in this case) in which it is created (i.e. my work PC) and, indeed, when I try to upload the story to my laptop it tells me there's no story in the file (I have a Mac and am trying to upload the story in Chrome).

Is there something I'm doing wrong/missing?

I guess there must be a way to go on working on the story from a different computer.

Thanks for your help!