User blog comment:DaNASCAT/Technical Update:July 15, 2015/@comment-11733175-20150716160156/@comment-126761-20150716171443

Aye, we're currently testing out this migration feature, to help make it really easy to get started using the new infobox code - there's a bit of background about it here: Help:InfoboxMigration (with detailed info on the portable infobox code itself on Help:PortableInfoboxes).

If it's incorrectly classifying templates, could you send in examples to Special:Contact? We'll want to try and get them off the list (and may bump up the priority of making items manually removable from Insights).