Not sure what you you mean by "old" Yammer tenants. Could you please
clarify? But we will be backfilling/connecting legacy Yammer groups in
our next phase of this Office 365 Groups integration project. Can't say
a specific timeline about when that will happen, but work is started
@SteveNguyen Example. We have a company with hundrets of Yammer Groups and for exampe six Yammer tenants under the main Yammer Tenant connected to three multitenant Office 365 tenants. In this Yammer architecture we have Yammer Groups with out Office 365 Group Features (my "old" ones) and a lot of files and conversations. Do you have a plan to migrate this automatic or do we have the new Office 365 Group Features only for new Groups in the same Yammer Tenant or do they have to create a new Yammer network? #Migration #Change to the Office 365 Groups support
Our goal is to have all Yammer groups connected to Office 365 Groups. That said, accomplishing will take awhile for 1:many tenant setups like what you describe. So it's something we want to do, but will be some time away.
Your situation sounds like 1 tenant mapped to multiple networks. This is on the longer term roadmap, but we don't have an ETA for this support. If you don't have a business need to have separate networks, we recommend merging your networks so that there's a single network for a single tenant.