This question seems to be largely a duplicate of:
Will/Should Serverfault be dropping the "networking support" in the upcoming future?
The takeaway from that earlier discussion is that the way NE is currently defined, it overlaps 100% with SF - any question that's on-topic there is also on-topic here. So it doesn't make sense to have an off-...
It doesn't look like the information about posts being migrated (PostHistory.PostHistoryType=17) is stored in the data dump. The best data we have is is in the migrations section of the 10k tools
In the last 90 days
To be honest I'm not sure what the point of NE is; network engineering is really a component of systems administration, and in smaller scenarios is even usually done by sysadmins. The skill set is the same and most people I know in my field have at least a CCNA if not a CCNP.
Migrating questions unnecessarily simply annoys users and redirects efforts from ...