Imports to Birda do count towards life lists, challenges and challenge badges (badges awarded when completing a challenge) on Birda. Imports, however do not count towards general (non-challenge) badges.
We are looking into creating programmatic connections to other platforms (e.g. linking your eBird or iNaturalist account to Birda) and once that is done we may award badges for imported records.
So go ahead and import your records to Birda to get started in a challenge and to get your entire life list and sighting history on Birda! We currently support imports from platforms such as eBird, iNaturalist, Birdtrack, Birdlasser, with more coming soon😀