I’ve figured out how to take search results and import them as their own separate tiers, i.e. make a new tier(s) with only a determined subset of the annotations in other tier(s). I wrote up a guide on how to do it, and Alex though I should share it on here:
http://humans-who-read-grammars.blogspot.com.au/2017/08/elan-making-tiers-out-of-search-results.html
Hope you like it.