problem with ar-extensions import

hi! I'm using rails 2.3.2 with ar-extensions 0.9.1 (mysql 5)

I'm trying to use the import() method on one of my AR models and it
works but it still runs a single insert query for each record. Oddly,
MyModel.supports_import? returns false even though that value seems to
be hard coded ... ? [1]

does the db table type make a difference?

1. http://tinyurl.com/kty8zt