This option allows to replace any prototype that published in your Justinmind account with the one you have in your workspace. Once you click the option you will see the following dialog:
This dialog lists all the projects and prototypes in your Justinmind account that you can access.
Select which prototype you want to replace.
Optionally, enter a brief description of what has changed from the last time you published the prototype. This message is only informative for the reviewers and it will be overwritten the next time you 'Reshare' or 'Replace' a published prototype.
If you want the reviewers to be notified via email about this version click the check box.
Once you click the 'Replace' button, the prototype published in your Justinmind account will be replaced with the version you have in your workspace.