We are migrating from SP 2013 On-Prem to the cloud. We currently use Ping Federate as the idP for our external users, but we intend to use the native external sharing options online. Is there any way of doing user mappings or am I going to have to do this the long, hard way? I'm using ShareGate and I can maintain the metadata for those users, but it's the permissions for these external users that I'm sweating over. Appreciate the help!