We have numerous Journey version since we have made changes throughout the year so having a nice single dashboard showing all the email metrics of the Journey is not possible unless I am missing something. So what I am wondering is, can I export the SFMC data(clicks,opens,bounces,...) to the SFSC environment? The goal would be to consolidate all the version of a specific Journey into a single reports/graphs.
You will note that when configuring an Email Activity in a Journey Builder Interaction, there's an option to Send Tracking Results to Sales Cloud (refer to screenshot below). I have yet to use this feature, but I assume this will only work if you are using a 'Salesforce Data' event or 'Salesforce Campaign Event' from the Define Entry Event modal when creating an entry event.
This feature is undocumented, but I assume that it enables you to review tracking data for each email in Salesforce, similar to the current functionality with Salesforce Email Sends.