"Move connections to a system you own. Let’s face it, as great as LinkedIn is, it’s a third-party system. To ensure you will always be able to connect with your contacts, it’s a good idea to get connections to opt-in to your own system for communicating with them. Should anything happen to LinkedIn or your connections, you’ll have your own way of staying linked, even if it’s just an email group in Outlook."
Author: http://www.forbes.com/sites/williamarruda/
https://www.forbes.com/sites/williamarruda/2017/06/30/what-linkedin-will-look-like-in-the-future-and-the-actions-you-need-to-take-now/#63aade425c6f