Office 365 Hybrid On Premise Groups and Users Missing From GAL

[FN-GM]

Hiya,

 

We are finding that on premise users and groups are missing from the address list. When we migrate a user to the cloud they appear. Interestingly a couple of on premise groups now appear in the could. Is there a way to get these on premise groups and users to appear on the office 365 GAL please?

 

Thanks