A customer has an on premise SharePoint Server (2013) Farm with multiple web applications/site collections serving 15,000 users – each with a mysite.
The customer has also moved all collaboration site collections to Office 365/SharePoint Online to extend collaboration with external users. However, they have mysite in the cloud as well which makes it hard for the users not recognizing their new mysite. Some have (unfortunately) already started adding content and social feeds to their cloud mysite.
So my customer would like to know How can we merge Mysite in this Hybrid Solution?