In order for you bulk imported encounters to be added to an existing project, your spreadsheet needs to include a couple of project-related fields to assign them correctly (Encounter.project0.projectIdPrefix and Encounter.project0.researchProjectName).
“Completed” under the Class field means that identification has completed and your match results are ready. Clicking on that link will take you to the match results page.
I saw your post before it was deleted, but wanted to give you context that the search indexing isn’t always immediate. It can take a moment after you update encounters for them to get re-indexed and for the new data to be searchable. I’m glad you we able to get unblocked.