Handle edge cases in search

**Description**
Currently core lacks proper import support.

**Proposed solution**
Add configurable import with sensible defaults.

**Priority**: Low/Medium

Start by locating the core search and import entry points in the repository. Read how imports are currently handled, then determine where configuration and defaults belong. Done means import behavior covers the reported edge cases and supports configurable sensible defaults.

Written by the indexing model from the issue text.