We’ve got a pretty huge but dying Ning community at http://www.grasshopper3d.com and a huge and thriving Discourse community at https://discourse.mcneel.com. We use our own SSO (https://accounts.rhino3d.com) for our Discourse logins.
I’ve seen Migrating from Ning to Discourse (step 2 is “Delete all your Discourse content” )
It seems like a daunting task to merge these two communities. On one extreme, we could try to bring all the users and content from Ning over to Discourse. On another extreme we could make Ning read-only and email everyone asking them to have new conversations on Discourse.
Is there a middle path? Does anyone have advice on how we might proceed?