Migrating users from M365 security group

Hi ah_ha​ 

this are two different concepts. M365 security groups are available in M365 admin center, SharePoint groups are available "only" on SharePoint sites. You can use M365 security groups in SharePoint groups but not the other way around.

On the Microsoft 365 Active teams and groups page, you can create groups of user accounts that you can use to assign the same permissions to in SharePoint Online and CRM Online. For example, an administrator can create a security group to grant a certain group of people access to a SharePoint site.

Here are more detailled informations: https://learn.microsoft.com/microsoft-365/admin/email/create-edit-or-delete-a-security-group?WT.mc_id=DX-MVP-5004845 

You can create an Power Automate flow to "sync" your M365 security members into an SharePoint group.

Best, Dave