Importing state from another test case?

I have a resource that cannot be created upon apply, it has to be created only after other existing resources are in place. My thoughts on this are to create one set of test resources, then create another set of test resources with the changes in place, but the only way this would work is if it’s possible to import state from the first set. Is this possible in the test suite for terraform-provider-aws RDS service?

I found an ImportState argument that I think does what I want it to do in TestAccRDSCluster_basic. Cheers.