Thank you for your post.
At this time, Shared Guides will not update the hosted file. Only shared guides created on the host shows on the client machines.
I encourage you to enter this into our Feature Requests web form at:
The entries into this web form populate a database file that is monitored by Development and Product Management where the entries are then discussed and considered for a future release. Although I could copy your post and paste it into the web form, there are a couple of questions asked that only you can answer.